Getting Your Home Warm Before the First Cold Snap: An October Checklist

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.