If your ducted system is in good working order, you can usually retrofit zoning by adding motorised dampers and extra thermostats, often for a few thousand dollars. Once a unit passes about 15 years, breaks down regularly, or faces a repair bill near half the cost of a new system, replacing it with a zoning-ready unit is generally the smarter long-term choice. The deciding factors are the age and condition of the indoor unit, the state of your ductwork, and whether the existing fan can handle the change in airflow that zoning creates.

At Heating Experts, we service and install ducted reverse cycle systems across every capital city in Australia, and this is one of the most common questions we get from homeowners with cold back rooms. The short version: adding a zone to an existing system is often possible, but only if the equipment underneath it can support it. This guide walks through how to tell the difference, what each option costs, and when each one makes sense.

What does it mean to zone a ducted air conditioning system?

Zoning divides a home into separate areas that can be heated or cooled independently. It uses motorised dampers inside the ductwork and multiple thermostats or a zone controller, so you can send conditioned air only to the rooms you are using.

The benefit is comfort and efficiency. Instead of running the whole system to keep every room at temperature, you condition the living areas during the day and the bedrooms at night. The Australian Government's YourHome guide notes that central systems with zone settings let you switch heating or cooling on or off in sections of the home used less often, which makes them more efficient. Empty rooms are no longer wasting energy.

Can you add zoning to an old ducted system?

Yes, in many cases you can. If your ductwork can support it, a technician can add a damper and thermostat to give the back rooms their own zone without replacing the whole unit. This can fix uneven heating and cold-room problems at a fraction of the cost of a new system.

The catch is that the system has to handle the change. When dampers close off part of the home, the same volume of air from the fan is forced through fewer outlets. That raises static pressure inside the ducts. A system designed for zoning manages this with a variable-speed blower and pressure relief. An older system that was never designed for it can struggle, which is where the age and type of your equipment start to matter.

How old is too old to zone a ducted system?

A well-maintained ducted system usually lasts 10 to 15 years, and many run 15 to 20 years before major failures. Zoning makes the most sense in the first half of that lifespan, when the unit still has years of reliable service ahead of it.

A useful test is the 50% rule. If a single repair would cost more than about half the price of a new unit, replacement is usually the more economical choice. Spending several thousand dollars adding zones to a system that is already near the end of its life rarely pays off, because you are attaching new controls to hardware that may fail within a few years anyway. If your unit is regularly breaking down and the repair bills are adding up, that is a strong signal the money is better spent on a replacement.

Age alone is not a death sentence. A 12-year-old system that has been serviced every year and still runs quietly and efficiently can be a reasonable candidate for a retrofit. The condition matters more than the number.

Retrofit vs replace: a side-by-side comparison

The table below compares adding zones to your existing system against replacing it with a new zoning-ready unit.

How much does it cost to retrofit zoning compared to replacing?

Retrofitting zones is the cheaper path when the system supports it. Adding motorised dampers, wiring a control panel, and fitting extra thermostats typically lands in the low thousands to several thousand dollars, depending on how many zones you want and how easy the ductwork is to reach.

A full replacement is a much bigger job. In Australia, a complete ducted installation usually runs into the tens of thousands. A common estimate for a standard mid-size home is around $13,000 to $25,000 in total, with the unit accounting for roughly $8,000 to $15,000 and installation another $5,000 to $10,000. The exact figure depends on the size of the home, the system capacity, and how much of the existing ductwork can be reused. You can see indicative figures on our pricing page.

The gap in upfront cost is why so many homeowners lean toward a retrofit first. It is the right call when the existing unit and ducts are sound. It stops making sense when you are spending several thousand dollars to prolong a system that is close to needing replacement anyway.

When retrofitting zones makes sense

Retrofitting is the cost-effective option when the bones of your system are still good. It works best when a few things line up:

• The indoor unit is under 10 to 15 years old and runs reliably.
• The ductwork is in good condition, correctly sized, and not leaking.
• The fan and motor have the capacity to handle reduced airflow when dampers close.
• Your main complaint is uneven comfort, such as bedrooms that never reach temperature.

In these cases, adding zones solves a real problem cheaply and extends the comfort of a system you were happy with. Keeping up with an annual service and maintenance schedule also helps here, since a well-maintained system is more likely to cope with the added demands of zoning.

When replacing your ducted system makes more sense

Replacement becomes the smarter choice when the existing system is too old, undersized, or unreliable. Adding modern controls to equipment that is already underperforming rarely delivers good results. A few situations tip the balance toward a new system:

• The unit is 15 to 20 years old or breaking down regularly.
• It runs on R-22 refrigerant, which has been phased out in Australia and is expensive to source when a top-up is needed.
• The ductwork or fan cannot handle zoning without short-cycling or pressure problems.
• Running costs are high because the old unit predates modern efficiency standards.

The efficiency gain alone can be significant. Older gas ducted heating turns only about 85% of its fuel into heat, while a modern reverse cycle heat pump is 300 to 600% efficient, producing 3 to 6 units of heating or cooling for every unit of electricity. That difference is why reverse cycle systems can cost noticeably less to run than gas ducted heating over a year. A replacement also resets the clock, giving you 15 to 20 years of service, a current refrigerant, and features like WiFi control and inverter compressors. When you reach this point, our team can talk through a new ducted installation and size it correctly for your home.

Signs your ducted system cannot handle zoning

Some older systems will fight a zoning retrofit. Watch for these warning signs before you commit:

• Single-speed compressor and fixed-speed fan. These systems cannot slow down when zones close, so airflow has nowhere to go. Zoning is still possible, but it needs careful balancing to avoid pressure spikes.
• Leaky or undersized ductwork. If the ducts already restrict airflow, closing dampers only makes it worse. Poor ducts limit the benefit of zoning and can raise duct pressure and noise.
• Short-cycling. A unit that already switches on and off frequently will do it more once zones reduce the load, wearing out the compressor faster.
• Rooms that are far apart in demand. When one zone needs a lot of air and another almost none, an undersized or single-stage system can overload the fan or starve some rooms.

None of these rule out zoning entirely, but they mean a proper assessment is essential. Adding dampers to a system that cannot manage the airflow can leave you with more noise and less comfort than you started with.

Frequently asked questions

Can you zone a single-speed ducted air conditioner?

Yes, but it takes careful design. Single-speed systems can be zoned with the right dampers, and controls from manufacturers like Arzel work with single or multi-stage systems. The installer has to prevent short cycling and high static pressure, usually by keeping enough duct open or fitting a bypass, so the fan is never starved.

Will adding zones damage my ducted system?

It can, if the system is not suited to it. Forcing the same airflow through fewer outlets raises static pressure, which can strain the fan motor and cause short-cycling on an older single-speed unit. A well-designed retrofit with pressure relief avoids this, which is why an assessment of your fan and ducts comes first.

Does zoning save money on running costs?

Usually yes. By heating and cooling only the rooms you use, zoning stops the system conditioning empty spaces. The savings are larger on an efficient modern unit than on an old one, because zoning controls where the air goes but does not improve the efficiency of the underlying equipment.

How many zones can a ducted system have?

Most homes are set up with two to five zones, often splitting living areas from bedrooms. The practical limit depends on the capacity of your unit and ductwork, since each zone changes how air is distributed. An oversized number of small zones on a single-speed system can cause airflow problems.

The bottom line on retrofit vs replace

Retrofitting zones can solve comfort problems at a lower cost when your ducted unit still has good airflow, a capable fan, and years of life left. Once the system is 15 years or older, running on phased-out refrigerant, or breaking down often, replacing it with a zoning-ready heat pump is usually the more cost-effective choice over its lifetime. If your ducted system is barely too old to zone, replacing it often beats retrofitting.

The honest answer depends on your specific unit, and it is worth having someone look before you spend. We are product agnostic and independent, so our recommendation is based on the condition of your system rather than a brand we are trying to sell. If you would like a straight assessment of whether to retrofit or replace, book a consultation with our team and we will give you an honest answer.

The best time to get your home warm for winter is before the first cold snap arrives. Working through a simple October checklist gets four jobs done: servicing your heater, sealing draughts, checking your thermostat, and testing your safety alarms. Do them while the weather is still mild and your heating will fire up reliably on the first cold morning, rather than failing when you need it most.

At Heating Experts, we service and repair heaters across Melbourne, Sydney, Canberra, Adelaide, Brisbane and Perth, and our busiest week of the year is almost always the first genuine cold snap of the season. That is when heaters that sat idle all summer refuse to start and the phones run hot. The checklist below is the same set of jobs we recommend to customers who want to get ahead of that rush. Most of it you can do yourself in a weekend, and the rest takes one booking.

Why get your home heating ready in October?

Getting your heating ready early means faults are found on your schedule, not on the coldest night of the year. A quick pre-winter check gives you time to order a part, book a technician, or top up insulation before demand peaks and wait times blow out.

There is a comfort and cost payoff too. A well-sealed, well-tuned home holds its heat, so the system runs less and your bills stay lower. The tasks that follow are ordered roughly from most to least important, so start at the top and work down as time allows.

Book a professional heating service first

If you only do one thing this month, book a service. Energy Safe Victoria recommends you have gas heaters serviced at least every two years by a qualified gasfitter, and the lead-up to winter is the ideal time to do it. A technician will clean the burners, check electrical connections and safety controls, and confirm the unit is running safely and efficiently.

A pre-winter service usually covers:

• Cleaning burners and internal components so the unit runs efficiently
• Testing safety controls and electrical connections
• Checking carbon monoxide levels while the heater is operating
• Flagging worn parts before they fail on a cold night

This matters for every heating type, whether you run gas heaters, ducted systems or reverse-cycle units. A single professional heating service covers the whole system in one visit.

Test-run and bleed your heating before you need it

Switch your heating on for a full cycle now, well before the first cold snap. Let it run for ten minutes and check that every room, radiator or vent heats evenly, that the unit fires up without hesitation, and that there are no unusual noises, leaks or error codes.

If you run a hydronic system, cold spots at the top of a radiator usually mean trapped air. Bleeding the radiators, starting with the one furthest from the boiler, releases that air so heat can circulate properly. After bleeding, recheck the system pressure and top it up if the gauge reads low. If your hydronic heating still runs unevenly, or a ducted or gas unit won't start, it is far cheaper to arrange a heating repair now than during the winter peak.

Replace or clean your heater filters

Dirty filters are one of the most common reasons for poor airflow and higher running costs. Restricted air makes the system work harder to push warm air through the house, which wastes energy and shortens the life of the unit.

Install fresh filters, or clean reusable ones, before you rely on the heater daily. On ducted and reverse-cycle systems, check the return-air filter every few months through winter and clean it when it looks grey with dust.

Seal draughts and top up your insulation

Even a perfectly tuned heater cannot keep you warm if the heat is leaking straight out. This is one of the highest-value jobs on the list. According to the Australian Government's YourHome guide, air leakage accounts for 15% to 25% of winter heat loss in a typical home, and sealing gaps can cut energy bills and emissions by up to 25%.

Work through the obvious gaps first:

• Fit weather strips or draught excluders to external doors and windows
• Use a door snake or brush seal on the bottom of draughty doors
• Caulk gaps around window frames, skirting boards and where pipes enter walls
• Close off unused chimneys with a chimney balloon or damper

Insulation is the other half of the job. YourHome estimates that installing roof and ceiling insulation can save up to 45% on heating and cooling costs, making it one of the most cost-effective upgrades in a cold climate. If your ceiling insulation is thin, patchy or missing, topping it up before winter pays for itself over time.

One safety note: if you have un-flued or open-flued gas heaters, do not seal fixed wall or floor vents. Those vents provide the ventilation the heater needs to run safely.

Check your thermostat, timers and zoning

Your thermostat controls both comfort and cost, so test it now. Turn it up and down to confirm the system responds quickly and shuts off at the right temperature. If your programmer or clock reset during a summer power cut, set the schedule again for your current routine.

Where you set the temperature makes a real difference. Sustainability Victoria recommends heating living areas to between 18°C and 20°C, and notes that every degree higher can add around 15% to your heating costs. A few practical settings to check:

• Program heat to come on shortly before you wake and get home, and off when you are out or asleep
• Set living areas to 20°C and bedrooms lower
• Use zoning, or simply close doors, to heat only the rooms you are using
• Replace the batteries in any wireless thermostats or sensors

Keep the warm air moving through your home

Heat only warms you if it can circulate. Keep at least 30 centimetres of clear space around floor heaters, furnaces and vents, and make sure furniture or curtains are not sitting over registers and blocking the flow.

If you have ceiling fans, run them clockwise on low through winter. This pushes the warm air that collects near the ceiling back down into the room. Reverse-cycle systems are efficient at spreading heat evenly, and if you are weighing up an upgrade, ducted reverse-cycle systems heat the whole house from one unit.

Heater safety: smoke alarms, carbon monoxide and clearance

Winter is when heating-related fires and carbon monoxide incidents rise, so treat safety as part of the checklist, not an afterthought. Press the test button on every smoke alarm and replace any units past their recommended lifespan. Fit alarms on each floor and outside sleeping areas.

Carbon monoxide from faulty gas appliances is a serious hazard because it has no smell or colour. A carbon monoxide alarm adds a layer of protection, though Energy Safe Victoria notes it is a backup rather than a substitute for regular servicing. Watch for warning signs such as a gas flame that changes from blue to yellow or orange, which can indicate a problem. Keep flammable materials well clear of any heater, and if you have a fireplace or wood stove, have the flue swept and inspected before you light it.

Simple habits that help your home hold heat

A few low-effort habits trim your heating costs on top of the bigger jobs above:

• Open curtains and blinds on sunny days for free solar warmth, then close them at dusk to trap it
• Lay rugs on hard floors to insulate your feet and the room
• Keep internal doors closed to concentrate heat in the rooms you are using
• Use a hot water bottle or an electric blanket in bed instead of heating the whole house overnight

None of these replace a working heater, but together they let you run the system a little less for the same comfort.

Your October home-warming checklist at a glance

Frequently asked questions

When should I service my heater in Australia?

Have your heater serviced at least once every two years by a qualified gasfitter, and ideally before winter. Booking in early beats the peak-season queue and means any faults are fixed before the cold arrives.

What temperature should I set my heater in winter?

Set living areas between 18°C and 20°C. Every degree higher can add around 15% to your heating costs, so 20°C is usually the sweet spot for comfort and running cost.

Why does my heater smell when I first turn it on?

A dusty, burning smell for the first few minutes is usually dust burning off the heat exchanger, and it clears quickly. A smell that lingers, or any gas or sharp chemical odour, means you should switch the heater off and book a check. Our guide on why your heater smells explains what different smells point to.

Get your home ready before the cold hits

Working through this checklist in October means your home is warm, efficient and safe when the first cold snap arrives. If you would rather hand the technical jobs to a professional, our team can service, repair and safety-check your whole system in one visit. Get in touch with Heating Experts to book your pre-winter heating service.

Get an urgent gas heater check the moment you notice a warning sign: flu-like symptoms that appear only when the heater is running, a yellow or flickering flame, soot or brown stains around the unit, or a carbon monoxide alarm going off. Carbon monoxide (CO) is colourless and odourless, so you cannot see or smell it, which is why these physical clues matter so much. At Heating Experts, we service and repair gas heaters for households across Australia and back every job with a 100% workmanship guarantee. That work has taught us one simple rule worth repeating: if something seems off with a gas heater, stop using it and get it inspected by a licensed gasfitter before you turn it back on.

A gas heater in good condition vents combustion gases safely outside. The danger starts when a crack, blockage, or ageing component lets those gases spill back into the room. This guide covers what carbon monoxide is, the warning signs that call for an urgent check, the symptoms to watch for, and the steps to take right now if you suspect a problem.

What is carbon monoxide and why are gas heaters a risk?

Carbon monoxide is a gas produced when fuels like natural gas or LPG don't burn completely. According to Energy Safe Victoria, CO "is a gas you can't see or smell," and when it spills from a gas heater it "can make you very sick or even kill you and your family."

A well-maintained heater burns gas cleanly and sends the exhaust outdoors through a flue. Problems arise when combustion becomes incomplete or venting fails. Common causes include a cracked heat exchanger, a blocked or corroded flue, a dirty burner, or a heater that hasn't been serviced in years. Any gas heater can be affected, including central heating units, space heaters, wall furnaces, and decorative log fires.

The scale of the risk is easy to underestimate because CO gives no warning to your senses. In the United States, the Centers for Disease Control reports that more than 400 people die each year from unintentional carbon monoxide poisoning not linked to fires. Most of those exposures are preventable with regular servicing and a working alarm.

Warning signs you need an urgent gas heater check

Some signs mean you should stop using the heater immediately and arrange a check the same day. The table below lists the most common warning signs, what they usually indicate, and the urgent action to take.

In every one of these situations, treat it as an emergency. Turn off the heater and any other gas appliances, open doors and windows, and get everyone outside into fresh air. Call your doctor or 000 if symptoms are severe, such as difficulty breathing, confusion, or loss of consciousness. Do not stay inside trying to find the fault yourself.

The flame colour clue: blue versus yellow

The colour of the burner flame is one of the clearest at-a-glance checks you can do. Energy Safe Victoria advises watching for "changes in how your gas heater operates," and flame colour is the change most people can actually see.

A flame that has turned from blue to yellow is a reason to switch the heater off and book a check, even if no one feels unwell.

Symptoms of carbon monoxide poisoning to watch for

Carbon monoxide symptoms are often mistaken for a cold, the flu, or general tiredness. The Better Health Channel lists the common warning signs of CO exposure:

• Tiredness
• Headaches
• Dizziness
• Nausea or vomiting
• Shortness of breath
• Weakness
• Confusion
• Chest pain

Long-term exposure to low levels can also cause impaired thinking and concentration, emotional changeability, irritability, and impulsiveness. The clue that points to CO rather than a virus is timing: symptoms tend to appear or worsen when the heater is running and ease after you leave the house or get fresh air. If more than one person, or a pet, feels unwell at the same time and only at home, that pattern deserves serious attention.

Who is most at risk from carbon monoxide?

Some people are more vulnerable to carbon monoxide than others. According to the Victorian Department of Health, the groups at increased risk include children, pregnant women and their unborn babies, older people, and people with chronic heart and lung disease. These household members can be affected at lower CO levels and should be moved to fresh air first if exposure is suspected.

What to do right now if you suspect carbon monoxide

If you think carbon monoxide may be present, act immediately rather than waiting to be sure. The official Victorian Department of Health guidance is to take these steps:

1. Open windows and doors to ventilate the area.
2. Turn off the gas heater and any other gas appliances.
3. Go outside to breathe fresh air, taking vulnerable household members first.
4. See your GP to ask whether your symptoms may be related to carbon monoxide, or call 000 in an emergency.
5. Get the heater inspected and serviced by a licensed gasfitter before you use it again.

Do not turn the heater back on, and do not attempt to diagnose or repair a gas appliance yourself. When we take these calls at Heating Experts, our priority is always to confirm the household is safe first, then send a qualified technician to test the heater with proper equipment.

How often should you service a gas heater?

You should have a gas heater serviced by a licensed gasfitter at least once every two years, and that service should include a carbon monoxide test. This is the clear recommendation from both Energy Safe Victoria and the Better Health Channel, and it applies to old and new heaters alike.

A proper professional gas heater service does more than a quick clean. It includes checking combustion, inspecting the flue for cracks or blockages, examining seals and components for wear, and using a meter to measure carbon monoxide output. This is where small faults get caught before they become dangerous. A hairline crack in a heat exchanger or a partially blocked flue produces no smell and often no obvious symptom until CO has already built up.

If a heater is more than a decade old, has never been serviced, or shows any of the warning signs above, don't wait for the two-year mark. Book a check now, and if the unit is beyond safe repair, we can talk through replacing an older heater with a safer, more efficient model.

Open-flued gas heaters and why they need extra attention

Open-flued gas space heaters draw air from inside the room and vent exhaust up through a flue. Energy Safe Victoria notes these units "can spill carbon monoxide more easily than other types of heaters," and warns the technology is "incompatible with newer better sealed, energy efficient homes."

The problem is negative air pressure. In a tightly sealed home, running a kitchen rangehood or a bathroom exhaust fan at the same time as an open-flued heater can pull air, and CO, back down the flue into the room. Since 1 August 2022, the Building and Plumbing Commission has banned the sale of open-flued heaters that don't shut down automatically within 15 minutes if they spill combustion products. Heaters installed before that date are not covered by the ban, which is one reason older open-flued units need regular servicing. A few practical rules reduce the danger:

• Don't run the rangehood or bathroom exhaust fans while an open-flued heater is on.
• Ensure the room has adequate fresh-air ventilation.
• Never run the heater overnight or for extended unattended periods.
• Have open-flued heaters serviced on schedule and tested for CO spillage.

If your home has recently been draught-proofed or renovated to be more airtight, mention that when you book a service. It changes how the heater vents, and it's worth having a technician confirm the unit still operates safely.

How to prevent carbon monoxide problems

Prevention comes down to three habits: service on schedule, install alarms, and operate the heater as intended.

Regular servicing is the single most effective step, because it catches faults you cannot see or smell. A carbon monoxide alarm is an important backup. Choose an alarm that meets the UL2034 or EN50291 standard, install one on each level of the home near gas appliances, and test it monthly. As Energy Safe Victoria makes clear, an alarm "should never be a substitute for regular servicing." It warns you if CO escapes, but it cannot fix the underlying fault.

Safe operation matters too. Use the heater according to its manual, keep intake vents and flues clear, and never use outdoor gas appliances like patio heaters or camping stoves indoors, since they are not designed for indoor ventilation and can emit dangerous CO. And treat gas work as a licensed-only job. If a heater needs gas heater repairs, it should be handled by a qualified gasfitter, never as a DIY project.

Frequently asked questions

Can a gas heater leak carbon monoxide without any smell?

Yes. Carbon monoxide is completely colourless and odourless, so you cannot detect it by smell or sight. The rotten-egg smell people associate with gas comes from an odorant added to natural gas to reveal raw gas leaks, not CO. This is why physical warning signs and a working CO alarm are so important.

Does a yellow flame on my gas heater mean carbon monoxide?

A yellow or orange flame is a strong warning sign. A healthy gas flame burns mostly blue. A yellow, lazy, or flickering flame usually means the gas is burning incompletely, which produces carbon monoxide. Switch the heater off and book a professional check.

Do carbon monoxide alarms replace gas heater servicing?

No. A CO alarm is a backup that alerts you if carbon monoxide is already escaping into the room. It does not inspect or fix the heater. Energy Safe Victoria is explicit that an alarm should never replace a service every two years by a licensed gasfitter.

How often do modern gas heaters need checking?

Every gas heater, regardless of age, should be serviced at least once every two years and tested for carbon monoxide. Older units, unserviced units, and any heater showing warning signs should be checked immediately rather than waiting.

Get your gas heater checked

If your heater is due for a service, showing any warning sign, or you simply want peace of mind before winter sets in, book a gas heater check with our licensed technicians. We'll test combustion, inspect the flue, measure carbon monoxide output, and confirm your gas heaters are safe to use.

Your heater needs replacing rather than repairing when it is old, out of warranty, and breaking down often. The clearest signs are age beyond 15 years, repairs that keep coming back, energy bills that climb every winter, uneven heating, and any safety fault like a yellow flame or a rotten-egg smell. As a rule of thumb, if a repair would cost more than half the price of a new system, replacement is usually the better spend. At Heating Experts, we have helped more than 35,000 households across Australia make this call, and most bookings that come to us are repair related, so we see every day where the line sits between a worthwhile fix and money spent on a system that is on its way out.

This guide walks through each warning sign, gives you a simple repair-versus-replace framework, and covers the safety faults that should never wait.

When should you replace a heater instead of repairing it?

Replace your heater instead of repairing it when two or more of these apply: it is more than 15 years old, it has needed several repairs in a short time, parts are hard or expensive to find, your bills are rising without a matching change in usage, or a single repair quote approaches half the cost of a new unit. One isolated fault on an otherwise healthy system usually points to a heater repair. Several signs stacking up at once point to replacement.

The sections below explain each sign so you can weigh your own situation.

Your heater is more than 15 years old

Most gas heaters, ducted systems, and hydronic boilers last around 15 to 20 years. Once a unit passes 15 years, it is near or past its expected lifespan, and repairs tend to become a temporary fix rather than a lasting one.

ENERGY STAR recommends planning for replacement once a furnace or boiler is more than 15 years old. Age matters for two reasons. First, older units run less efficiently, so you pay more to get the same warmth. Second, spare parts for discontinued models get harder to source, which drags out repairs and pushes up their cost.

If you are not sure how old your system is, check the compliance plate or the last service sticker for a manufacture or install date.

You are calling for repairs more often than you used to

A single breakdown is normal. A pattern of breakdowns is a signal. When an older heater needs multiple parts replaced, or you find yourself booking a technician every few weeks through the coldest months, the repairs are usually treating symptoms of a system that is wearing out as a whole.

This is one of the strongest indicators we see. When a unit is old, parts are hard or expensive to obtain, and it has had a run of separate faults, ongoing repairs rarely pay off. The money is often better put toward a new system that comes with a fresh warranty and years of reliable service ahead of it.

Your energy bills keep climbing

A failing heater loses efficiency, and that shows up on your bills before it shows up anywhere else. If your heating costs creep or jump year after year on similar usage, without rate rises or a colder winter to explain it, the system is likely working harder to produce less heat.

The savings from replacement can be real. ENERGY STAR qualified furnaces run about 15 percent more efficiently than conventional models, and qualified boilers about 5 percent more efficient than new standard units. The latest models are clearly more efficient than 15-year-old ones, and the difference tends to show in your bills. Staying on top of annual servicing helps protect efficiency along the way, but servicing cannot reverse the decline of a system that has reached the end of its life.

Some rooms never get warm

Uneven heating is a common late-stage symptom. If some rooms stay cold while others are warm, or the heater struggles to reach the temperature you set on a cold day, the system may no longer be able to do its job.

Watch for these performance problems:

• Cold spots or rooms that never reach a comfortable temperature
• A system that cannot hold the thermostat setting in cold weather
• Weak airflow from vents or registers
• Short cycling, where the heater switches on and off constantly

Occasional versions of these can point to a repairable fault such as a blocked filter or a failing thermostat. Persistent problems across a system that is already older usually point toward replacement.

New noises or strange smells

Newer heaters run quietly. Loud banging, clanking, rattling, grinding, or whining noises often mean serious mechanical wear inside the unit. Strange smells deserve the same attention. A burning or musty odour when the system runs is a reason to book a technician.

Some of these signs are simply a nuisance. Others are a safety matter, which the next section covers in detail.

Safety signs you should never ignore

Certain faults move a heater straight into the replace-or-repair-immediately category, no matter its age. Gas appliances in particular can develop dangerous combustion problems, and these are not something to wait on.

Call a qualified technician straight away if you notice:

• A yellow or orange burner flame instead of a clean blue one
• A smell of rotten eggs, which can indicate a gas leak
• A carbon monoxide alarm triggering near the appliance
• Soot marks or staining around the unit

Carbon monoxide is especially serious because, unlike natural gas, it has no smell or taste, so you may not know you are being exposed until you feel unwell. We recommend annual carbon monoxide testing on all gas heating appliances as a basic safety step. A cracked heat exchanger, which is one cause of carbon monoxide leaks, can cost several thousand dollars to fix and often signals that full replacement is the safer path.

Repair versus replace: how to decide

When you are weighing a specific fault, it helps to line up the signs side by side. The table below summarises how the same factor reads differently depending on the state of your system.

If most of your answers fall in the right-hand column, replacement is likely the more economical and reliable choice.

The 50 percent rule for repair costs

A widely used industry guide is the 50 percent rule: if a repair would cost more than roughly half the price of a new system, replacement is usually the better value. A large repair on an ageing unit, such as a cracked heat exchanger, can run into the thousands and sometimes approaches the cost of a new system altogether.

New units change the maths in your favour in another way too. Modern heaters commonly carry a warranty of at least five years, so a replacement can remove both the recurring repair bills and the risk of the next surprise fault. You can compare typical repair and replacement costs on our upfront pricing page before you decide.

Frequently asked questions

How long does a gas heater last in Australia?

Most gas heaters last around 15 to 20 years with regular servicing. Once a unit passes 15 years, it is worth planning for replacement, because efficiency drops and parts become harder to find.

Is it worth repairing a 20-year-old heater?

Usually not, if the repair is significant. A 20-year-old heater is past its expected lifespan, so a costly fix often buys only a short reprieve before the next fault. A minor, inexpensive repair can still make sense if the system is otherwise safe and working.

Does a new heater really lower energy bills?

Yes, in most cases. A modern, efficient unit uses less energy to produce the same warmth. ENERGY STAR qualified furnaces run about 15 percent more efficient than conventional models, so the switch can noticeably reduce heating costs over a winter.

What is the first thing to check before replacing a heater?

Check the age and the repair history first. A system under 15 years old with a single, affordable fault is usually worth repairing rather than moving to a full heater replacement. Age beyond 15 years combined with repeated faults points the other way.

Making the call with confidence

The clearest signal comes from a cluster of signs appearing together rather than any single fault. A heater that is older than 15 years, breaking down repeatedly, costing more to run, and struggling to keep you warm is a strong candidate for replacement. Replacing an old, failing unit with a modern, efficient model restores comfort and reliability, lowers running costs, and puts an end to the steady drip of service calls.

If you would like a straight answer on whether your heater is worth repairing or better replaced, our technicians offer no-obligation advice and back every job with a 100 percent workmanship guarantee. Book a time with the team at Heating Experts through our contact page, and we will help you weigh the options for your home.

Ducted heating installation in Melbourne costs between $5,000 and $15,000 in 2026, including the unit and installation. Most standard 2 to 3 bedroom homes sit at the lower end of that range, while larger or fully zoned homes push toward the top. At Heating Experts, we install ducted systems across Melbourne every week, and the majority of the quotes we prepare land inside that $5,000 to $15,000 band once the equipment, ductwork, and labour are added up.

The exact figure depends on your home size, whether you choose gas or reverse cycle, and how much ductwork the job needs. This guide breaks down real 2026 pricing, what moves the number up or down, and how to read a quote so you know what you are actually paying for.

How much does ducted heating cost to install in Melbourne in 2026?

The typical installed cost for a ducted heating system in Melbourne is $5,000 to $15,000. That range covers most homes, from modest units through to large family homes with multiple zones. An average ducted gas system on its own tends to fall between $3,000 and $9,000 depending on the size and efficiency of the unit, with the rest of the cost coming from ductwork and installation labour.

Here is how the numbers usually break down by home size and system type in 2026.

These figures line up with national cost guides, including the ducted heating cost guide published by Yellow Pages, which puts a complete ducted heating and cooling install at $5,000 to $15,000. Your final price will move within that range based on the specifics of your home, which we cover below. Our upfront service and consultation fees, including our installation consultation and quotation, are listed on our pricing page.

Gas ducted heating or reverse cycle: which costs more to install?

Gas ducted heating is usually the cheaper system to install upfront. An average gas ducted heating system runs $3,000 to $9,000 for the unit, and Melbourne's temperate to cool climate makes gas ducted heating one of the most common choices in the city.

Reverse cycle heating costs more to install. A ducted reverse cycle system for a typical Melbourne house usually costs $10,000 to $12,000 installed. The trade-off is that it heats in winter and cools in summer from the same system, so you are paying for two functions in one install rather than heating alone.

• Gas ducted: lower upfront cost, heating only, $3,000 to $9,000 for the unit
• Reverse cycle: higher upfront cost, heating and cooling, around $10,000 to $12,000 installed for a typical home

What affects the cost of ducted heating installation?

The single biggest driver is home size. Larger homes need a bigger heater and more ductwork, which raises both equipment and labour costs. Beyond size, several factors decide where your quote lands.

• Heat loss factors. Ceiling height, insulation levels, and the number and size of windows all dictate how much heating capacity your home needs. A poorly insulated home with high ceilings needs a bigger system than a compact, well-sealed one.
• Zoning. Splitting the home into separately controlled areas adds $1,000 to $3,000 for the extra dampers and controls. Zoning costs more upfront but lets you heat only the rooms you use.
• Added ductwork. If your home needs new or extended ductwork, whether for a retrofit or an added zone, expect $1,000 to $5,000 or more on top of the base price.
• Installation complexity. Tricky roof access or structural work inflates labour fees. Melbourne HVAC labour runs around $26 per hour, slightly above the national median, which adds a few hundred dollars to a typical job.
• System type. As covered above, gas and reverse cycle sit at different price points, so the fuel and technology you choose shifts the total.

In our experience quoting Melbourne homes, location, home size and layout, system type, and installation complexity are the four factors that explain almost every difference between one quote and the next.

Why can't some new Melbourne homes install gas ducted heating?

From January 2024, new Victorian homes that need a planning permit must be all-electric, which rules out new natural gas connections. This is part of the state's gas substitution roadmap, which is moving new residential builds away from gas.

For homeowners building or substantially renovating, this usually means installing a reverse cycle system instead of gas ducted heating. Reverse cycle costs more upfront, as the table above shows, but it adds summer cooling that a gas system does not provide. Existing homes with a gas connection are not affected and can still repair or replace gas ducted heating.

How does Melbourne compare to Brisbane on ducted heating cost?

Upfront installation costs in Melbourne and Brisbane are broadly similar. Both cities sit in the same $5,000 to $15,000 installed range, and labour rates are close, so installer charges per hour are nearly the same. The main difference is the running cost rather than the install cost. Brisbane's milder subtropical winters mean less heating usage, so gas ducted systems tend to run slightly cheaper to operate there, while Melbourne's cooler climate drives more winter usage.

The takeaway for Melbourne homeowners is that the initial install price is driven by the same factors in both cities, so you should budget within that range regardless of which city guide you read.

How can you keep ducted heating installation costs down?

The best way to control cost is to right-size the system for your home rather than over-specifying capacity. Getting an itemised quote that separates the unit, ductwork, and labour also makes it easy to see where your money is going and compare offers fairly.

• Right-size the system. A heater matched to your home's heat loss avoids paying for capacity you will never use.
• Address insulation first. Better insulation lowers the capacity you need, which can shrink both the equipment cost and your running bills.
• Weigh zoning against usage. Zoning adds $1,000 to $3,000, but if you only heat part of the home, it can pay for itself in running savings.
• Plan ductwork early. Retrofitting ductwork later costs $1,000 to $5,000 or more, so it is cheaper to scope it correctly at install time.

When we handle a ducted heating installation in Melbourne, we start with a heat loss assessment so the system is sized to the home, which is the step that most affects both the install price and long-term running cost.

Frequently asked questions

What is the average cost of a gas ducted heating system?

An average ducted gas system costs $3,000 to $9,000 for the unit, depending on home size and system efficiency. Ductwork and labour are added on top, which brings a full installation into the $5,000 to $15,000 range.

How much does it cost to add zoning to ducted heating?

Zoning adds $1,000 to $3,000 to a ducted heating installation. That covers the extra dampers and controls needed to heat separate areas of the home independently.

Does adding ductwork increase the installation cost?

Yes. Adding or extending ductwork, whether for a retrofit or a new zone, costs $1,000 to $5,000 or more on top of the base price. Homes without existing ductwork sit at the higher end because the full duct run has to be installed.

Is ducted heating cheaper to run in Melbourne or Brisbane?

Ducted gas heating is generally cheaper to run in Brisbane than Melbourne. Brisbane's milder winters mean less heating usage, while Melbourne's cooler climate drives higher winter demand. Upfront install costs, however, are similar in both cities.

Get an accurate ducted heating quote for your Melbourne home

Every home is different, so the only way to know your exact cost is a proper assessment of your home's size, layout, and heat loss. If you would like a no-obligation quote for ducted heating in Melbourne, contact our team and we will size the right system for your home and give you an itemised price.

Yes, the reverse-cycle system that heats your home in winter is the same unit that cools it in summer. A reverse-cycle air conditioner is a heat pump, and it can run in two directions. In winter it moves heat into your home. In summer it moves heat out. You do not need a separate air conditioner, because one system already does both jobs. At Heating Experts, we install and service reverse-cycle systems that turn one unit of electricity into three to six units of heating or cooling, which is why so many Australian homes now rely on a single system all year.

Below we explain how the same unit cools in summer, why running one system beats running two, what it costs, and how to get the most out of yours through the hot months.

Can a reverse-cycle heater really cool the house in summer?

It can, and cooling is one of its two core functions. A reverse-cycle unit is built to run in both directions from the day it is installed. Switch it to cooling mode and it works like any modern air conditioner, pulling warm air out of your rooms and pushing it outside.

The word "reverse" is the clue. The system can reverse the direction it moves heat. That single feature is what lets your winter heater become your summer aircon.

How does reverse-cycle cooling work in summer?

A reverse-cycle system uses a heat pump and a refrigerant circuit. A component called a four-way reversing valve decides which way heat travels, so the same hardware can heat or cool. Australia's energy authority describes it as simply moving heat "from the dwelling to the external environment to deliver cooling." Here is what happens in each mode.

Cooling mode in summer

In summer, the indoor coil absorbs heat from the air in your room. Warm indoor air blows over the cold coil, the refrigerant carries that heat outside, and the outdoor unit releases it. The indoor fan then blows cool, dry air back into the room. In effect, heat is pumped out of the house rather than made inside it.

Heating mode in winter

In winter, the reversing valve flips the cycle. The outdoor coil now draws heat from the outside air, even on cold days, and the indoor coil releases that heat into your rooms. The system swaps which coil is inside and which is outside, and nothing else about the unit changes.

Why one system for heating and cooling makes sense

Running a single reverse-cycle system instead of a separate heater and air conditioner saves you money on equipment, installation, and space. It also gives you a few benefits that a standalone heater or a basic cooler cannot match:

• Built-in dehumidifying. When a reverse-cycle unit cools, it also pulls moisture out of the air. That makes humid summer days feel more comfortable, which evaporative coolers and fans cannot do because they do not remove moisture.
• Cleaner indoor air. Most units include filters that trap dust, pollen, smoke, and odours as the air passes through, so the air feels fresher while the room cools.
• Safer operation. There is no open flame and no combustion. The unit runs on electricity, the exterior surfaces stay cool, and maintenance is usually as simple as keeping the filters clean.
• One system to install and maintain. A single unit means one installation and one service schedule instead of two, which keeps both upfront and ongoing costs down.

How efficient is reverse-cycle cooling?

Reverse-cycle systems are the most efficient way to heat and cool a home because they move heat instead of generating it. Australia's energy efficiency authority rates reverse-cycle air conditioners as the most energy-efficient combined heating and cooling system you can buy.

The numbers explain why. According to energy.gov.au, reverse-cycle units are 300 to 600 percent efficient, meaning one kilowatt-hour of electricity produces three to six kilowatt-hours of heating or cooling. A gas heater, by comparison, converts only about 80 to 85 percent of its fuel into heat, and a plain electric heater tops out at 100 percent. The efficiency is measured as a Coefficient of Performance, or COP, and modern units commonly reach a COP of 3 to 5 in mild conditions.

What does a reverse-cycle system cost to run?

For cooling, a properly sized reverse-cycle unit uses very little power in normal operation. Installers often note it draws around a quarter of what a toaster or kettle pulls. The high efficiency that makes it cheap to cool is the same efficiency that makes it cheap to heat, and the heating figures show the gap clearly.

Modelling by Renew and SACOSS compared the annual cost of heating a typical three-bedroom Adelaide home with different systems:

Source: Renew and SACOSS modelling.

Even without extra insulation, the reverse-cycle system costs about a third of the gas bill. Adding ceiling insulation brings it down further. Independent CSIRO housing research reaches the same conclusion, finding that reverse-cycle heating is about four times more efficient than natural gas and saves a typical Adelaide household around $440 a year. Because the same unit handles summer cooling, that efficiency covers both seasons with no second system to buy or run.

How does reverse-cycle cooling compare to fans and evaporative coolers?

Fans and evaporative coolers have their place, but they do different things. A fan moves air without actually cooling it. An evaporative cooler adds moisture to the air, which works in dry heat but struggles on humid days. A reverse-cycle system cools the air and removes humidity at the same time, and it is the only one of the three that also heats in winter.

How to get the most from your reverse-cycle system in summer

A few simple habits keep your unit cooling efficiently through the hottest part of the year:

• Close windows and external doors while cooling, so you are not paying to cool air that escapes.
• Set a sensible temperature. Around 24 to 25 degrees is comfortable in summer, and every degree lower adds to the running cost.
• Use Auto mode and let the inverter adjust its own output rather than running at full power the whole time.
• Run ceiling fans alongside it to spread the cool air, which lets you set a slightly higher temperature for the same comfort.
• Clean the filters regularly. Blocked filters make the unit work harder and cool less. This is the single easiest way to protect efficiency, and regular servicing keeps the whole system running well. If you want a quick seasonal check, our guide on getting your air conditioner ready for summer walks through the basics.

Frequently asked questions

Does a reverse-cycle air conditioner dehumidify in summer?

Yes. When a reverse-cycle unit cools, warm air passes over a cold coil and moisture condenses out of it. That lowers the humidity in the room, which is why the air feels drier and more comfortable than it does with a fan or an evaporative cooler.

Is it cheaper to run a reverse-cycle aircon or a fan in summer?

A fan uses less power, but it only moves air and does not lower the room temperature or remove humidity. A reverse-cycle unit costs more to run than a fan yet still uses relatively little electricity, and it actually cools the space. Many homes use both, running a fan alongside the aircon to spread the cool air.

Do I need a separate air conditioner if I have reverse-cycle heating?

No. A reverse-cycle heater already includes air conditioning, because the same heat pump runs in both directions. Buying a second unit for summer would duplicate what you already own.

What temperature should I set my reverse-cycle aircon in summer?

Around 24 to 25 degrees is a good balance of comfort and cost. Setting it much lower makes the unit work harder and pushes up your bill without adding much comfort, especially if you pair it with a ceiling fan.

Get expert help with your reverse-cycle system

If you want a reverse-cycle system that cools well in summer and heats efficiently in winter, the key is sizing it correctly, sealing and insulating the home, and keeping it serviced. Our team installs and maintains reverse-cycle systems across Australia, and we are happy to help you choose and set up the right unit for your home. Contact Heating Experts to book an assessment or a service.

A ducted heating service checklist before winter covers the core jobs that keep your system safe and efficient: clean or replace the filters, clear the vents and registers, test the thermostat, check the gas burner and heat exchanger, test your smoke and carbon monoxide alarms, and book a professional service before the cold sets in. The best time to do this is autumn, so any problems are found before you rely on the heater daily. At Heating Experts, our standard ducted heating service runs through a 16-point safety and performance check across gas, reverse cycle and hydronic systems, and the issues we find most often (blocked filters, faulty thermostats and unserviced gas components) are exactly the ones this checklist helps you catch early.

Below is the full checklist, what you can safely do yourself, and the checks that legally or practically need a qualified technician.

Why service your ducted heating before winter?

A pre-winter service protects three things: your safety, your running costs, and the life of the unit. Heating systems sit idle through summer, so dust settles, seals dry out, and small faults go unnoticed until the first cold night. Running a neglected system hard from day one is when breakdowns happen.

Efficiency is the clearest payoff. A clean system moves air freely and does not have to work as hard to reach temperature. EnergyStar notes that airflow problems can cut a system's efficiency by up to 15 percent, and a dirty filter alone raises energy costs and shortens equipment life. Getting the basics right before winter means lower bills across the whole season. If your bills have crept up, it is worth understanding the other reasons heating bills rise in winter.

For gas ducted systems there is also a safety case. A cracked heat exchanger or blocked flue can spill carbon monoxide into your home, which is why the gas checks below are not optional.

When should you service ducted heating?

Service your ducted heating once a year, ideally in autumn before winter demand begins. For gas ducted heating, Energy Safe Victoria recommends heaters be serviced every two years at a minimum by a qualified gasfitter, specifically to test for carbon monoxide leakage. Annual servicing is the safer standard, and many manufacturers require yearly service by a licensed technician to keep the warranty valid.

Booking early matters. Autumn is the quietest period for heating technicians, so you get faster appointments and any parts that need replacing can be ordered before you actually need the heater running.

Your complete pre-winter ducted heating checklist

Work through the items below in order. Some are simple homeowner tasks. Others involve gas, electrical or internal components and should be left to a licensed technician. The table shows which is which at a glance.

Clean or replace the air filters

Dirty filters are the single most common cause of poor heating performance. They restrict airflow and force the fan and motor to work harder for less warmth. Replace disposable filters or wash reusable ones before the season starts. EnergyStar advises you change air filters monthly during heavy use, or at least every one to three months. A clean filter is the cheapest efficiency upgrade available to you.

Clean the vents and registers

Take off the vent covers and vacuum or wipe away the dust and debris that built up over summer. Blocked registers create uneven heating and the cold spots that make some rooms never feel warm. Make sure furniture, rugs and curtains are not sitting over the outlets.

Test the thermostat and controls

Set the thermostat to heat mode and check that its reading matches the actual room temperature. If the two do not match, the thermostat may need recalibrating or replacing. Run a full heating cycle and confirm the system starts, holds temperature, and shuts off cleanly. For efficient running, energy.gov.au recommends keeping the internal temperature between 18°C and 20°C, and notes that every extra degree can add up to 10 percent to your energy use.

Inspect and seal the ductwork

Check the accessible duct joints and insulation for gaps, tears or loose connections, then seal any leaks with approved foil tape or mastic. Leaky ducts waste the heat you are paying for and are a common cause of cold rooms and high bills. While you are at it, weather-strip around doors, windows and the roof-space access hatch. Our guide to inspecting your ductwork walks through what to look for in more detail.

Inspect the gas system and heat exchanger

This step is for gas ducted heating and is where a licensed gasfitter earns their keep. The burner flame should be bright blue. A yellow or sooty flame points to incomplete combustion. A cracked heat exchanger or a gas leak is a fire and carbon monoxide risk, so these need professional testing, not a visual glance. If you ever smell gas, shut off the supply, ventilate the area, and call a professional before using the heater again.

Check electrical connections and moving parts

With the power off, a technician will tighten electrical connections and test the motors and control circuits. Loose connections cause unsafe operation and wear parts out early. Moving parts such as blower and fan motor bearings are lubricated where needed, since friction from dry bearings wastes energy and shortens the motor's life.

Check the condensate drain

Combined heating and cooling units often have a condensate drain that can clog over time. A blocked drain causes water damage and humidity problems. Clearing it is a standard part of a professional service.

Clean the heat exchanger and blower

Dust on the blower wheel, housing and furnace interior chokes airflow and makes the system labour. During a professional tune-up the technician vacuums or brushes these internal components so the system breathes freely and heats faster.

Test the smoke and carbon monoxide alarms

Before you fire up the heater, test every smoke alarm and carbon monoxide detector, replace the batteries, and confirm they work. Alarms are your early warning for both fire and CO buildup. We cover the warning signs in our article on a gas heater making you sick.

Book a professional service

Finish with a full inspection by a qualified technician. A pre-winter service adds gas pressure testing, combustion analysis and safety checks that a homeowner cannot perform, and it catches minor faults before they turn into a mid-winter breakdown. It also protects your manufacturer warranty. You can see everything covered in our professional ducted heating service.

What can you do yourself, and what needs a technician?

Roughly half the checklist is safe homeowner maintenance. The other half involves gas, electrical components or internal parts, and legally or practically belongs to a licensed technician. Splitting the work this way keeps you safe and keeps costs down, because the jobs you handle yourself are the ones a technician would otherwise charge for.

• Safe to do yourself: cleaning or replacing filters, cleaning vents and registers, testing the thermostat, testing smoke and CO alarms, and basic weather-stripping around doors and windows.
• Leave to a technician: gas line and heat exchanger inspection, electrical connection testing, condensate drain clearing, internal heat exchanger and blower cleaning, and full combustion and gas pressure testing.

A useful rule of thumb: if the task needs the panels off, the gas on, or the power live, it is a technician's job.

Gas ducted heating and carbon monoxide safety

Carbon monoxide is the reason gas heating safety cannot be skipped. It has no colour or smell, and a faulty or poorly maintained heater can release it into your home. Energy Safe Victoria warns that any gas heater can spill CO, including newer central heating units, and that high levels occur when an appliance is faulty, poorly maintained, or the flue is blocked.

Two habits protect your household. First, have gas ducted heating professionally serviced on schedule so the heat exchanger and flue are tested. Second, install carbon monoxide alarms and test them before winter. A blue burner flame, working CO alarms, and a recent gas service are the three things worth confirming every year.

How much does a ducted heating service cost and what is included?

A professional ducted heating service typically includes a gas safety and carbon monoxide test, filter and airflow checks, thermostat testing, burner and sensor cleaning, electrical inspection, and a full operational run. Pricing depends on the system type and location rather than a flat national rate, so it is worth confirming when you book. Because we are not tied to any single brand, our technicians service gas, reverse cycle and hydronic ducted systems from most major manufacturers, and we recommend the repair or part only when the system actually needs it.

Signs your ducted heating needs a service or repair before winter

Test your heater in early autumn rather than on the first cold night. Book a service or ducted heating repair if you notice any of the following:

• Weak airflow or rooms that never reach temperature
• A yellow or flickering burner flame instead of steady blue
• Unusual smells, rattles or banging when the system runs
• The heater short-cycles, turning on and off repeatedly
• Higher bills than last winter for the same usage
• The system is more than 12 months since its last service

Catching these early is almost always cheaper than an emergency call-out in July. If your bills are the main concern, our tips on how to increase your heater's efficiency pair well with a service.

Frequently asked questions

How often should ducted heating be serviced?

Once a year is the recommended standard, ideally in autumn before winter. Gas ducted heating should be serviced at least every two years by a qualified gasfitter for carbon monoxide safety, though annual service is safer and often required to keep a warranty valid.

Can I service ducted heating myself?

You can handle the basic maintenance: cleaning or replacing filters, cleaning vents, testing the thermostat, and testing your alarms. Gas, electrical and internal component checks must be done by a licensed technician for safety and warranty reasons.

How long does a ducted heating service take?

A standard pre-winter service usually takes around one to two hours, depending on the system type and whether any faults are found that need attention.

What happens if you do not service ducted heating?

An unserviced system runs less efficiently, costs more to run, and is more likely to break down mid-winter. For gas systems there is an added carbon monoxide risk from an untested heat exchanger or blocked flue.

Book your pre-winter ducted heating service

Working through this checklist each autumn keeps your ducted heating safe, efficient and reliable through the coldest months. If you would rather have the gas, electrical and combustion checks handled by a licensed technician, contact our team to book a pre-winter service before the season gets busy.

A faint dusty or burning smell the first time you turn your heater on for the season is almost always normal. It comes from dust and debris burning off the heat exchanger and internal parts, and it usually clears within a few minutes to a few heating cycles. The smells worth acting on are different: a rotten-egg or sulfur smell, a sharp electrical or metallic burning smell, or an acrid melting-plastic smell. Those are not normal and need attention straight away.

At Heating Experts, we service and repair heaters across Australia, and the first-of-winter dust smell is the one we get asked about most. In most cases it clears within the first heating cycle or two, and it is harmless. The important part is knowing how to tell that ordinary smell apart from the few that point to a gas leak, an electrical fault, or a mould problem. This guide walks through both, so you know when to relax and when to switch the unit off.

Why does my heater smell when I first turn it on?

When a heater sits idle over the warmer months, dust settles on the burner, heat exchanger, elements, and vents. The first time you run it, that dust heats up and burns off. This produces a dusty, slightly burnt smell that many people describe as "hot dust." It is the single most common heater smell, and it is nothing to worry about.

The smell should fade quickly. In most cases it clears within a few minutes and is gone after the first heating cycle or two. Opening a window while the unit runs helps it clear faster. If you have a brand-new heater, you may also notice a mild chemical or plastic-like smell as the factory coatings and oils on new components burn off for the first time. That is also normal and usually settles after the first few hours of running.

Which heater smells are normal?

These smells are expected and generally clear on their own:

• A dusty or burnt smell on the first run of the season. Accumulated dust burning off the heat exchanger and vents. It should fade within minutes to a couple of heating cycles.
• A mild chemical, paint, or plastic smell from a brand-new unit. Factory coatings and protective oils burning off for the first time. It diminishes after a few hours of operation and disappears over the first few uses.

For both, good ventilation speeds things up. If a smell that should be temporary is still strong after a day of normal use, treat it as a sign to look closer. Our guide on why your heater smells covers the less common causes in more detail.

Which heater smells mean something is wrong?

Some smells are not part of normal startup and should never be ignored. Shut the heater off and investigate, or call a professional, if you notice any of these:

• Rotten egg or sulfur. A likely natural gas leak.
• Electrical, metallic, or burning-wire smell. Overheating wiring, a failing motor, or a control board fault, which carries a fire risk.
• A sharp, gunpowder-like smell. Often an overheating blower motor or circuit board.
• Acrid burning plastic or rubber. Usually a foreign object melting in a vent, or melting insulation.
• A musty or mouldy smell. Mould or mildew growing in the ducts or unit, which is a health concern.

Heater smell chart: normal vs concerning

The table below summarises the common heater smells, what usually causes them, and what to do.

Rotten egg or gas smell: what to do first

A rotten-egg or sulfur smell is the one smell you should never wait out. Natural gas is naturally odourless, so gas suppliers add a chemical odorant that smells like rotten eggs specifically so leaks are easy to detect. If you smell it, treat it as a gas leak until proven otherwise.

If you smell gas, follow these gas leak emergency steps: turn off your appliances and the supply at the gas meter, open doors and windows, and leave the area. Do not turn light switches, electrical equipment, or phones on or off near the leak, and do not use any flame. Once you are safely outside, call the national gas emergency line on 1800 GAS LEAK (1800 427 532) and arrange for a licensed gasfitter to investigate before you use the heater again.

Burning electrical or plastic smell: switch it off

An electrical, metallic, or burning-plastic smell points to a component running too hot. Common causes are overheating wiring, a failing blower motor, a faulty control board, or something melting inside a vent. Any of these can be a fire risk, so the safe response is to turn the heater off at the switch and stop using it.

If the smell is clearly a melting plastic or rubber odour, check the vents and surrounds for an object that may have fallen in, such as a toy or a plastic bag, and remove it if you can do so safely. If you find nothing, or the smell returns when you switch back on, book an inspection rather than running the unit. These faults tend to get worse with use, and they overlap with the reasons a gas heater stops working altogether.

Musty or mouldy smell from your heater

A musty or mouldy smell usually means mould or mildew has grown in the ductwork or inside the unit, often from moisture during the off-season. Unlike the dust smell, it does not burn off. It tends to get stronger the longer the heater runs and can circulate spores through the home, which is why it is treated as a health concern rather than a nuisance.

The fix is a proper clean and service of the unit and, for ducted systems, the ducts. Regular servicing and duct cleaning also prevent most musty and dusty smells from building up in the first place.

How long should a new heater or first-startup smell last?

A normal first-startup dust smell should be brief. Expect it to fade within a few minutes and clear entirely after the first one or two heating cycles. If it is still noticeable after a full day of normal use, something else may be going on.

A new heater's chemical or plastic smell lasts a little longer because there is more coating to burn off. It generally settles after the first few hours of running and disappears over the first few uses. As a simple rule: a smell that steadily fades is normal, and a smell that lingers, gets stronger, or turns sharp is a warning sign.

When to call a technician, and how to prevent heater smells

Call a professional if a smell lingers past its expected window, gets stronger with use, or matches any of the concerning smells above, especially anything gas, electrical, or mould related. Australian safety authorities recommend that gas heaters be serviced every two years by a qualified gasfitter and tested for carbon monoxide spillage, because all gas heaters can leak carbon monoxide as they age.

Carbon monoxide is a separate risk worth understanding, because it is colourless and odourless, so it will not announce itself the way a gas leak does. Watch instead for carbon monoxide poisoning symptoms such as headaches, dizziness, nausea, and feeling unwell only when you are at home. If you notice these, turn the heater off, ventilate, and have it checked before using it again. Routine servicing, including filter replacement and duct cleaning, is the most reliable way to prevent smoky, musty, and mouldy odours and to catch faults early. You can see what a full heater service and maintenance visit covers on our site.

Frequently asked questions

Is it normal for a heater to smell like burning dust? Yes. A burning-dust smell on the first run of the season is normal and comes from dust burning off the internal parts. It should clear within a few minutes to a couple of heating cycles.

How long does the burning smell from a heater last? A first-startup dust smell usually fades within minutes and is gone after the first one or two heating cycles. A new heater's chemical smell can take a few hours of running to clear.

Why does my heater smell like burning plastic? A burning-plastic smell often means an object is melting in a vent or a component is overheating. Turn the heater off, check for anything that has fallen into the vents, and book an inspection if the smell continues.

Should I be worried about a rotten egg smell from my heater? Yes. A rotten-egg or sulfur smell suggests a natural gas leak. Do not use switches or flames, leave and ventilate the area, then call the gas emergency line and a licensed gasfitter.

Can a smelly heater make you sick? A mouldy-smelling heater can circulate spores that affect breathing, and a faulty gas heater can produce carbon monoxide, which is odourless and dangerous. Both are reasons to have the unit serviced promptly.

Get your heater checked before winter

If your heater is giving off anything more than a brief dust smell, or it is overdue for a service, it is worth having a qualified technician look at it. At Heating Experts, we repair and service every major heater brand, from gas and ducted systems to hydronic heating. To get it sorted before the cold sets in, book a heater service online and we will make sure it is running safely and smell-free.

If your ducted heater warms the living areas but leaves the back bedrooms cold, the cause is almost always uneven airflow or a zoning problem, not a broken heater. The unit is usually producing plenty of heat. That heat is simply being shared unevenly, so the rooms nearest the system feel toasty while the far ones stay cool.

At Heating Experts, we service ducted reverse cycle systems across every capital city, and cold back rooms are one of the most common call-outs we get. In most cases the unit is working fine, and the real trouble is airflow: undersized or leaking ducts can cut the warm air reaching a far room by 20 to 30 percent or more. The good news is that these issues are fixable once you know which one you are dealing with.

Why does ducted heating warm some rooms but not others?

Ducted heating relies on balanced airflow through the duct network. Warm air leaves the central unit and travels through ducts to a register in each room. When that airflow is even, every room reaches a similar temperature. When it is uneven, some spaces overheat while others stay cold.

Back rooms tend to lose out because they are usually the last stop on the duct run. By the time air reaches them, it has passed several closer registers that have already taken their share. If anything restricts the flow along the way, the far rooms are the first to feel it.

What airflow problems leave the back rooms cold?

Most back-room cold spots trace back to how air moves through the ducts. These are the airflow issues we find most often:

• Undersized or blocked ducts. Duct runs that are too small or partly obstructed starve the far rooms of air. Properly sized ducts should deliver the full airflow a room needs, but undersized runs often supply only 60 to 80 percent of it. That shortfall creates pressure imbalances and leaves distant rooms under-heated.
• Leaky or damaged ducts. Gaps, cracks, or a collapsed flexible duct dump warm air into the ceiling or roof space before it reaches the room. A typical home loses 20 to 30 percent of its heated air through duct leaks, according to ENERGY STAR. The rooms at the end of a leaky run feel it the most.
• Clogged filters or a weak blower. A dirty filter or a tired blower motor reduces total airflow across the whole system. When the fan cannot push enough air, the closest rooms still get warm while the back rooms get almost nothing.

A blocked or partly closed vent can cause the same result. Furniture pushed against a register, or a vent that someone shut months ago and forgot about, quietly cuts the supply to that room.

How do zoning controls affect which rooms get heat?

Most modern ducted systems use zoning controls, which are dampers and thermostats that direct air where it is needed. A zone damper is a mechanical gate inside the ductwork that opens or closes to regulate airflow to each zone. When zoning is set up and working well, each area gets its fair share of warm air.

Problems appear when a zone is out of balance. If a damper sticks closed, or a back area has no thermostat of its own, that part of the house can receive very little heat or none at all. In a single-zone setup, the room furthest from the unit naturally gets the least conditioned air, because most of the warm air is delivered to the nearer zones first.

Balancing the zoning is often the fix. Adjusting or repairing the dampers lets you send more warm air to the cold areas. Adding a dedicated thermostat or an extra zone for the back rooms gives those spaces their own call for heat, so they stop being an afterthought. If your back rooms are consistently cold, having a technician test and rebalance the dampers is usually the first thing worth doing.

Why do distance, insulation, and unit size matter?

Even with healthy ducts and good zoning, some rooms are simply harder to heat. Rooms far from the unit, such as those on an upper floor or at the far end of a long house, receive less warm air by the time it arrives. Distance alone can leave the furthest room a few degrees behind the rest.

Insulation is the other big factor. A room with poor insulation loses heat as fast as the system can supply it, which is a common issue in older homes. A bedroom under an uninsulated ceiling, for example, sheds warmth quickly no matter how much air you send it. Improving the ceiling, wall, and window insulation around problem rooms reduces heat loss and helps the system hold temperature.

System sizing can also be the culprit. If the heater is only marginally sized for the whole house, it may warm the nearer zones adequately but never quite reach the setpoint in the back rooms. A telltale sign of an undersized unit is that even with every zone open, the system cannot get the far rooms up to temperature. In that case, running fewer zones at once, or upgrading the unit, may be needed.

How do you fix cold back rooms in a ducted system?

Cold back rooms usually come down to airflow, zoning, insulation, or sizing, and each has a clear remedy. The table below summarises the common causes and the fix that matches each one.

Working through these in order usually solves the problem. Start with the cheap, quick checks. Replace the filter, open any closed vents, and clear furniture away from registers. If the back rooms are still cold, the issue is more likely in the ducts, the zoning, or the insulation, and that is where a professional inspection pays off.

Routine servicing keeps most of these problems from returning. Annual service and maintenance keeps filters clean, airflow strong, and damper actuators working, which is exactly what a balanced system depends on. When the fault is in the hardware, repairing the ductwork or dampers restores even airflow. For a badly leaking or collapsed duct network, a professional heating repair and service visit is the reliable way to find and seal the losses.

Frequently asked questions

Should I close vents in unused rooms to push heat to the back?

Closing a few vents can nudge more air toward the back rooms, but closing too many raises pressure in the ducts and can worsen leaks. A better long-term fix is proper zoning, which directs air to where it is needed without straining the system. If you are relying on closed vents to stay comfortable, the system probably needs balancing.

How often should ducted heating be serviced?

Once a year is the standard recommendation, ideally before winter. An annual service covers a filter change, a blower and component check, and a carbon monoxide test on gas systems. Regular servicing keeps airflow strong and catches small faults before they leave a room cold.

Can I add a zone to my existing ducted system?

In many cases, yes. If your ductwork can support it, a technician can add a damper and thermostat to give the back rooms their own zone. This lets those rooms call for heat independently, which is one of the most effective fixes for a persistent cold spot.

Why is the room furthest from the unit always the coldest?

That room is the last stop on the duct run, so it receives air only after every closer register has taken its share. Any airflow loss along the way, from leaks, undersized ducts, or a weak fan, hits the furthest room first. Balancing the dampers or adding a zone evens this out.

Does duct cleaning help with cold back rooms?

It can, when the ducts are genuinely clogged with debris. Built-up debris restricts airflow to the rooms at the end of a run. A professional duct cleaning clears that restriction and helps warm air reach the far rooms again. If the ducts are clean but the rooms are still cold, the cause is more likely zoning, sizing, or insulation.

Get the back rooms warm again

Cold back rooms are almost always a sign that airflow or zoning has slipped out of balance, and it is one of the most fixable heating faults we see. If your ducted system is leaving the far rooms cold no matter what you try, book a heating inspection and we will test the airflow, check the zoning, and get every room heating evenly again.

For most Australian homes, a ducted reverse-cycle system is cheaper to run in winter than ducted gas heating, even though gas costs less per unit of energy. The difference comes down to efficiency. A reverse-cycle heat pump delivers 3 to 6 units of heat for every unit of electricity it draws, while a gas heater converts only about 85% of its fuel into usable heat. At Heating Experts, we install and service both ducted gas heaters and reverse-cycle systems across Australia, and on real winter bills the running-cost gap we see usually lands between 30% and 70% in favour of reverse-cycle.

That answer is not automatic, though. The result depends on your electricity and gas tariffs, your climate, the efficiency of your specific unit, and how you use it. This guide walks through the two factors that decide the outcome, shows the per-hour and per-year numbers from recent Australian studies, and explains the situations where gas can still hold its own.

The short answer: which costs less to run?

Reverse-cycle ducted heating is usually the cheaper system to run through an Australian winter. Gas is cheaper per unit of energy, but reverse-cycle uses so much less energy to produce the same warmth that it wins on the total bill in nearly every climate studied. Independent modelling and household cost studies have found reverse-cycle came out cheaper in every location tested, from cold Canberra to mild Adelaide.

The catch is that "cheaper to run" is not the same as "cheaper to install." Gas ducted heating still has a place, and we cover when it makes sense further down.

Why gas is cheaper per unit but not cheaper to run

Two numbers decide this comparison: the price you pay per unit of energy, and how efficiently your heater turns that energy into heat.

On price per unit, gas wins. In 2025 to 2026, residential electricity runs roughly 26 to 44 cents per kWh in major cities, while natural gas sits around 3 to 6 cents per MJ. Since 1 kWh equals 3.6 MJ, that gas price works out to about 10 to 20 cents per kWh of energy. On a like-for-like energy basis, gas is clearly cheaper to buy.

On efficiency, reverse-cycle wins by a wide margin. A modern ducted gas heater is about 80 to 95% efficient, so it produces 0.8 to 0.95 kWh of heat per kWh of fuel. A reverse-cycle heat pump moves heat rather than burning fuel, so it produces 3 to 6 kWh of heat per kWh of electricity. According to government energy advice, reverse-cycle air conditioning is "300 to 600% efficient," while gas heaters "typically turn only 85% of the gas into useable heat."

When you combine the two numbers, the efficiency multiplier usually beats the fuel-price gap. Here is how the cost of one kWh of delivered heat compares in Melbourne, using the tariffs above.

A heat pump running at a COP of 3 makes heat for around 9 cents per kWh, cheaper than gas at 13 cents. At a COP of 4 or higher, which good units reach in mild conditions, the gap widens further. This is also why old electric-resistance heaters got a bad reputation: at 26 cents per kWh of heat they really were expensive, roughly double the cost of gas. Reverse-cycle is a different technology, and the comparison changes completely.

How much does ducted gas heating cost to run?

A whole-home ducted gas heater typically uses about 20 to 25 MJ of gas per hour, which is around 5.6 to 7 kWh of energy. At average rates, that costs roughly $0.70 to $1.20 per hour to run, before the daily gas supply charge is added. Over a full winter of regular use, those hours and standing charges add up quickly. We break down the full picture in our guide on the cost to run ducted gas heating.

Gas heating also loses some heat up the flue by design, which is where the missing 5 to 15% of efficiency goes. That loss is normal and safe, but it is energy you pay for and do not feel.

How much does a ducted reverse-cycle cost to run?

A ducted reverse-cycle air conditioning system sized for a home, around 5 to 7 kW of output at a COP near 3, draws about 1.8 to 2.3 kW of electricity while heating. That works out to roughly $0.72 to $0.91 per hour at a 40 cents per kWh tariff, with no separate fuel supply charge.

Here is the per-hour comparison side by side.

At full output the two systems can look close on an hourly basis. The gap opens up over a season for a few reasons. Reverse-cycle units modulate their output and run at higher COP once a room is near temperature, gas systems keep a daily supply charge ticking over, and zoning lets a reverse-cycle system heat only the rooms in use. Those effects compound across hundreds of winter hours, which is why the annual studies below show a much larger difference than the hourly figures alone suggest.

Real running-cost comparisons from Australian studies

The clearest evidence comes from independent household studies rather than manufacturer claims.

A report by Renew for the South Australian Council of Social Service looked at a typical three-bedroom Adelaide home. Ducted gas heating cost about $1,444.85 a year, while heating the same home with a reverse-cycle air conditioner cost $476.61. Adding ceiling insulation brought the reverse-cycle figure down to $269.87.

That is a saving of roughly $970 to $1,175 a year, or 50 to 80%, from switching off gas and using a heat pump instead.

Broader CSIRO housing research citing Renew found similar annual savings across the capitals from replacing a gas heater with an efficient split system: about $546 in Canberra, $440 in Adelaide, $409 in Melbourne and $256 in Perth. The same research noted that heating with reverse-cycle is roughly four times more efficient than natural gas.

Does the answer change by climate and city?

This is where many people expect gas to win in colder regions, so it is worth looking closely. University of Melbourne modelling compared space-heating costs for a large home across several climates and found reverse-cycle was cheaper in every case.

The largest savings actually showed up in the coldest climate. Canberra homes use a lot of heat, so a system that produces that heat at a quarter of the energy cost saves the most in absolute terms. In milder Adelaide, the heating season is short and both systems cost little, so the dollar saving is smaller even though the percentage still favours reverse-cycle.

When ducted gas heating can still make sense

Reverse-cycle wins on running cost in almost every scenario, but a few situations still favour keeping gas.

• You already have a well-functioning ducted gas system and are not ready to replace it. Running an existing unit is cheaper than replacing a working one before the end of its life.
• You are on an unusually cheap gas tariff or have a very high electricity rate with no solar, which narrows the gap.
• You value the specific feel of gas heat, which some households prefer, and comfort is worth more to you than the running-cost saving.
• Your switchboard or supply would need costly upgrades to support a large reverse-cycle system, changing the total economics.

For a working system, the sensible move is often to run it efficiently now and plan the changeover for when it needs replacing. Regular servicing keeps either system running at its rated efficiency, which protects your running costs whichever fuel you use.

Switching from gas ducted to reverse-cycle

If your gas heater is nearing the end of its life, replacing it with a reverse-cycle is where the running-cost savings above become real. In most homes the existing ductwork can be reused, which keeps the changeover straightforward and usually completes in one to two days. We handle ducted heating installations directly, and for full changeovers we work with installers, whose gas to reverse-cycle conversion service reuses existing ducts to keep costs down.

A reverse-cycle changeover also gives you cooling for summer from the same system, removes the daily gas supply charge from your bill, and lets you pair heating with rooftop solar. If you are planning a new system rather than a conversion, a correctly sized ducted reverse-cycle installation matters more than headline efficiency, because an oversized unit short-cycles and an undersized one runs flat out at lower COP.

Frequently asked questions

Is reverse-cycle cheaper than gas ducted heating in Melbourne?

Yes. University of Melbourne modelling put annual heating for a large Melbourne home at $1,049 with gas versus $391 with reverse-cycle, a saving of $658 a year, or 63%. Melbourne's temperate winter suits heat pumps well because they hold a high COP through most of the season.

Does a reverse-cycle cost more to run on very cold days?

A heat pump's efficiency does fall as the outside air gets colder, so its COP drops on the coldest mornings. Even with that drop, reverse-cycle stayed cheaper to run than gas across every climate studied, and it produced the biggest savings in the coldest city, Canberra, where a large home saved $1,733 a year. The efficiency dip on cold days is real, but it does not erase the running-cost advantage.

Is gas or reverse-cycle better if I have solar panels?

Reverse-cycle is the clear choice with solar. It runs on electricity, so daytime solar generation can offset much of its heating cost, and pre-warming the home while the sun is up stores that value. Gas heating cannot use solar power at all.

Can I reuse my existing ducts when converting from gas?

In most homes, yes. Ducted reverse-cycle systems can usually reuse the existing ductwork from a gas heater, which keeps the conversion cost well below starting from scratch and means most changeovers are finished in one to two days.

The bottom line

Natural gas is cheaper per unit of fuel, but reverse-cycle systems produce heat so much more efficiently that they win on the winter running cost in nearly every Australian home. Recent studies put the saving anywhere from around 30% in mild climates to more than 70% in cold ones, with the biggest dollar savings in the coldest regions. Gas still suits some households, especially those with a working system, but for a new install or a replacement, reverse-cycle is almost always the cheaper system to run.

If you want to know which system will cost you least based on your climate, tariffs and home, book a heating assessment with our team and we will run the numbers for your situation before you commit to anything.

Once the spring season is over, summer will spread its wings. In the blazing heat of December to February, it's an arduous task to survive without the air conditioner. Due to disruptions caused by COVID-19, a vast majority of people have switched to online businesses, or are working from home.

In such conditions, living a comfort-filled life in the house can only be made practical if the internal temperature of the house is maintained. During summer, air conditioners can serve the purpose well. As the summer season is approaching, it's mandatory to check the home air conditioner to avoid any hassle at the eleventh hour. Let's dive deep into it:

1) Cleaning or Replacing of Filters

The first and foremost thing is to turn off the circuit breaker so chances of any potential damage or hazard can be avoided. Now look for the air filters; if they are clogged with dust, consider cleaning them. If conditions are not good, replacing them will be an optimal choice. As a precaution, changing them twice a year is a good option, but it completely depends upon usage and exposure to dust.

2) Cleaning of Condenser Coils

Condenser coils are directly responsible for the cooling of your room or residence. Clean these coils and remove all the dust and debris particles from the fan installed in the outdoor unit. It's a good practice to cover the outdoor unit at the end of the summer season and then unveil it at its start. This practice will protect your unit from a lot of dust and leaves so that the cleaning process will be a lot easier.

3) Cleaning of Blower Fan Blades and Drains

If your home air conditioner has a drain, ensure its thorough cleaning. Take a vacuum cleaner or a rag and remove dust and debris from the fan blades of the blower. During cleaning, don't disturb the unit's internal components; otherwise, you might not be able to reassemble it. This will lead to complications in your air conditioning unit. It's always  best practice to hire an expert technician to carry out the cleaning process before the start of the summer season.

4) Checking of Coolant Lines

Refrigerant pipes or tubes run through the air conditioner evaporator, and after passing through the air handler, these lines reach the condenser outside. These tubes are insulated by coolant foam. If you notice any areas where the sealant is frayed or missing, consider replacing it with a newer one before turning on the air conditioner. Wrapping these tubes with insulation tape in a spiral design can also serve the purpose.

Now, it's time to test the home air conditioner. Turn off the thermostat and switch on power at both the main panel and disconnect box. Finally, switch the thermostat to cooling, and sit back. Isn't it simple!

The Bottom Line

The cleaning process is crucial but relatively simple, and anyone can do it with a little effort. Just make sure to reassemble every part properly and don't apply additional force to the coils as they might get broken. Care should be taken as a little error can lead to problems. That's why it's preferable to seek assistance from an expert to avoid any potential damage. If you need an air conditioner cleaning service right in the comfort of your home, contact Heating Experts at 1300 100 040! We are offering same-day service in all the major cities of Australia at industry best prices.

Rinnai is a well-reputed brand that builds super-efficient and low-sustenance tankless water heaters with a lifetime warranty of up to 20 years. These best-selling water heaters, still, may develop problems while in use. These problems can originate from low maintenance and poor installation, component wear and tear, or improper use. Some fixes are very easy and you can DIY at home, while some will need an expert plumber’s assistance.

Are you having issues with a Rinnai tankless water heater? Do you see an error code on the unit’s display or on remote control, and you want help to understand it for proper troubleshooting? Let’s have a look at what steps you can take for Rinnai gas heater troubleshooting.

Just like other manufacturers, Rinnai needs regular cleaning, professional installation, and proper maintenance for excellent performance, water heating, and prolonged unit life.

Here in this article, you will see the most common problems and error codes found in almost all Rinnai water heaters, condensing and non-condensing. Don’t forget that for a valid warranty the Rinnai water heater must only be installed by a licensed Rinnai technician. Extensive skills and knowledge are needed for any electric, plumbing, gas, and tankless work. You can hire a licensed technician from Heating Experts.

Rinnai water heater error codes with meanings and fixes

These heaters have a self-diagnostic system to supervise the working of the unit. When an error occurs, the display unit shows an error code. These error codes vary depending on the  model and brand. We have made an error code guide for you containing the error codes, their meaning, and fix for Rinnai Gas heater troubleshooting.

Final verdict

There are around 30 error codes with different meanings and fixes. For more codes and details you can visit their official website. We tried our best to give you an understanding of the basic error codes with their meanings that you may see while using the Rinnai tankless water heater. Regular maintenance, like cleaning and flushing, will decrease the chances of breakdowns and other issues. Make sure you also reach out to the Rinnai heater technician at Heating Experts to help with heater installation, repair, and services. Call us now at 1300 100 040

An almost 100-year old leading global enterprise, Daikin is a name to be admired in the field of air conditioning. We all know Daikin for its typical stylistic Japanese approach in the field of electronics. Daikin not only produces exclusive quality products but also places customer facilitation in its priorities. For instance, the Daikin comfort control app offers amazing features and benefits to Daikin users.

This article from Heating Experts is all about the Daikin comfort control app. Let's begin!

Daikin Comfort Control App Gives Complete Control

Imagine you are returning home from the scorching summer heat, and you want your home temperature to be "chilling cold". Or, you left your home in a hurry and forgot to switch off your cooling/heating device. Yes, you are now worried because the system will consume unnecessary energy to maintain the programmed temperature.

Well, this could have been a huge problem in the past, but not today. Daikin comfort control app allows you to manage your heating and cooling system with the help of the internet at your fingertips.

Easy Installation

For the Daikin comfort control app, the installation of a Wireless Interface Adapter on the system's indoor unit is necessary. The setup process is quick and easy because of the module's WPS (Wireless Protected Setup) functionality. Once the user launches the app after registering and logging in, the app will automatically detect all connected units in the network.

Functions Which Are Accessible Via The Daikin Comfort Control App

Compatibility

Benefits of Daikin Comfort Control App

1. You can choose the fan mode for normal air circulation when you don’t want to heat or cool the atmosphere.
2. The app can control the individual units, as well as multiple group units easily.
3. You can program/set a schedule at your convenience.
4. The app allows you to set the temperature and mode of operation according to your desire.

Need professional help related to the installation or maintenance of your heating/cooling system? At Heating Experts, we offer economical and premium quality heating and cooling system installation, maintenance, and repair servicing. Feel free to call us at 1300 100 040 or visit our website for all types of queries.

Air conditioning problems are no fun. Without a working AC, you may have to deal with the heat, sweat, and discomfort of the summer.

We all know that air conditioners are a necessity in the summer. But, how do you deal with an air conditioner that won't turn on?

In this blog post, we'll discuss six troubleshooting tips to help get your AC back up and running as quickly as possible!

6 Air Conditioner Troubleshooting Tips

1) Make Sure the Circuit Breaker Is Working

It is most likely that the circuit breaker has tripped. It's easy for it to flip if there are too many appliances running at once. So first, try flipping the switch back on and see if your AC starts working again. Start by checking all your AC unit breakers. Fixing and resetting the breaker might not be as difficult as you may think. When the breaker trips, flip it back to its original position and wait a few seconds before turning the AC back on.

2) Thermostat May Require Replacement

The second most common cause of an AC malfunction is a dead thermostat. It might be time to replace or reset your thermostat if there is no problem with the breaker.

One of the reasons this happens could be because you have set the temperature too low on your unit.

If the compressor doesn't shut off after reaching its set point, it will run until an external force stops it, or no cooling fluid is left in its system.

3) Check for Leaks

A leaky AC unit is another thing that can impair its performance. If water is seeping into the unit or dripping onto your floor, this could be one of the reasons why your system won't turn on.

The best way to find out if there are any leaks is to inspect the air conditioning unit from time to time.

If you don't feel comfortable inspecting your system, it's best to contact a professional from Heating Experts to get the job done.

4) Air Filters Can Be Messy

Filters are necessary for your air conditioning unit to maintain a clean airflow. However, a messy air filter can cover the coils with freezing droplets that can disrupt the functioning of an AC.

You shouldn't just replace them when they become dirty. Instead, make sure you clean these filters regularly so that your system runs smoothly.

5) Check Out the Drainage Pan & Lines for Obstructions

If you don't clean out your drain pan and lines, this could be one of the reasons why your unit isn't working. Not only does it make a mess on your floors, but it also makes it difficult for water from the AC unit to flow through those areas.

This blockage can cause your AC to stop. Conversely, eliminating the blockage can help you restore the functioning of your AC within minutes.

6) Overheating Can Be a Major Problem

Another common problem with an AC can occur when the unit overheats. Sometimes after running for hours or days at a time, air conditioners can heat up quickly and may turn off.

When it does, this usually means that there is a more significant issue going on inside your system, and you might need to get help from Heating Experts' professionals before things get worse.

Final Words

These are the most common problems that can affect the working of your AC. If you cannot resolve them after reading this post, it's time to hire an expert from Heating Experts and let us take care of all your cooling needs! Call us now at 1300 100 040.

The hydronic heating system is an inexpensive way of efficiently cooling your living place. It offers a dust-free environment without drying out the inside air of your home. With other heating systems such as HVACs and furnaces, health risks are possible, but hydronic systems reduce the majority of them without any hassle.

No fans, no ducts, and even no filters mean mould-free fresh air will be guaranteed. Hydronic heating systems are the best choice for Aussies in the cold months of June to August, keeping them safe from allergens. To keep them running smoothly, maintenance is necessary. In this article, we will be sharing some maintenance tips to ensure the efficient working of hydronic heating systems.

1) Checking of Boiler and Furnace

The boiler is just like the CPU of a hydronic heating system. To ensure optimal performance of your heating unit, you need to maintain the proper functioning of the boiler and furnace. Calcium or rusting inside the furnace or boiler can reduce its efficiency. You can remove the calcium deposits with the required quantity of chemicals, and rust can be scoured away while patching the holes created by it.

Care should be taken because the chemical can cause complications and health problems. That's why it's preferable to hire a professional to carry out the maintenance process on a regular basis.

2) Bleeding the Radiators

If the radiator of the hydronic heating system is colder at the top than that of the bottom, chances of trapped air in the system marginally increase. It's mandatory to remove this air from the system by bleeding the radiator. If ignored, it will strain the system causing it to underperform.

To carry out bleeding, turn off the heating system and insert the key. Once inserted, turn it counterclockwise for a quarter rotation. When doing this a hissing sound will be produced, indicating the removal of air. When water starts dripping, lock the valve. Make sure to cover your hand with some cloth or protective gloves so hot water doesn’t burn your hand.

3) Boiler Water Level

To enjoy the optimal performance of the hydronic heating system, the boiler water level must be maintained. Lower water levels will not produce enough heat to ensure full warmth conditions, thus compromising on the ideal inner room temperature. You can do it yourself and refill it whenever needed, but safety measures should be taken. If water levels are draining too quickly, consult a technician to offer a quick repair before it leads to any scalable damage.

4) Opening of Thermostat Valves

For the optimized performance of your hydronic heating system over an extended period, all thermostat heads should be kept open when the system is not in use.

Also, keep on checking for critters, as they can internally damage the whole heating system. If found, spray them or call the critter experts to remove them speedily to avoid any potential complications.

The Bottom Line

The hydronic heating system is an exceptional mechanism for ensuring warmth and comfort during the cold months of June to August. But throughout the year, and especially during cold months, maintenance is inevitable. If you are finding it hard to manage time for it, or some technical complication is hindering your path, calling an expert technician from Heating Experts will resolve your problems. We are offering same-day service throughout major cities of Australia. Feel free to contact our professional team whenever you need any assistance at 1300 100 040.