Why Is My Heater Not Blowing Hot Air?

Until recently, the only way to cool home was through adequate ventilation. Even though the technology for air conditioning had been invented around 1900, it was not until the 1950s that it was finally introduced for residential applications. Since then, air conditioners have become an integral part of our home comfort equipment, and it’s almost impossible to imagine a world without them.

During the coldest winter months, all you want is a reliable, efficiently-functioning heating system. A well-maintained HVAC not only offers premium comfort during the cold weather, but equally offers a fair share of health benefits.

Inevitably, nearly every heater will develop some mechanical problems, even with proper, regular maintenance. And one common problem is your heating system is failing to blow hot air. This can be a nerve-wracking experience, especially if it happens in the middle of the winter. But, what are some of the most common causes of this particular problem?

• An overheated furnace: An overheated could be the potential cause of your cold air dilemma. It is imperative to note that instances of unending overheating can damage your unit’s heat exchanger. And when the issues reach your heat exchanger, then it is time to consider a replacement. The most common cause of this problem is the dirty air filter. The clogged air filters block the air circulation, and this, in turn, forces the furnace to run longer to heat your house until it overheats.
• The pilot light is blown out: This is another problem that can cause your heater to malfunction. This problem can be a bit complex, particularly for those who have never handled equipment before. On most occasions, relighting the pilot light will resolve this issue. Of course, if you are not sure about anything, always feel free to call your local heater repair professional.
• Wrong-sized furnace: If your heater is improperly fitted for your house, it will ultimately fail to meet your home’s heating and cooling needs. A heater that is too small for the house won’t effectively heat your home. On the other hand, a furnace too big will occasionally cycle on and off. To solve this issue, you will need a qualified heater installation professional to examine your home and recommend a good device that can effectively cool your house.
• Damaged ducts: Your warm air goes through the ducts, but if your home ventilation has holes, these holes will certainly allow cold air to come in contact with the hot air being blown inside your house.
• Thermostat issues: Incorrect thermostat settings, is another potential cause of your heater blowing cold air. You’ll want to examine your thermostat just to confirm it is set correctly. If you notice that it is in the ON mode, change it to AUTO. If this doesn’t offer any solution, you’ll need to call a heater service to diagnose the problem.
• Clogged oil filter: If you have an oil-powered heater, the chances are high that its filter can become clogged with both dirt and debris, just like an air filter on a gas-powered unit. When this occurs, ignition can be affected and the result is your furnace not blowing the much-needed hot air. Cleaning or replacing clogged air filters can be a messy and difficult task to execute, and you will need the assistance of a qualified heater professional.
• Faulty electronic ignition: If you have a furnace equipped with electronic ignition, your furnace may require regular adjustments as well as replacement of failed components. This is a technical problem that will ultimately require a visit from your heater repair professional.

These are some of the most common reasons that might cause your furnace to blow cold instead of hot air. Having your unit maintained, serviced regularly by a professional can help prevent heater-related issues like your furnace blowing cold air. Just give us a call on 1300 100 040 to keep your heater working optimally at the coldest winter months. Our expert technicians are always available to help you with any heater related issues.