No one is happy when the furnace is blowing cold air instead of warm. Instead of suffering until summer, find out why it’s not working as it should. Here are four top reasons for cold air out of your furnace.
#1: The Fan is Set to “On”
Your thermostat should have several fan options – heat, cool, auto, and on. If the fan is set to on, it will run continuously even if the heat isn’t on. This is one of the most common reasons cold air blows out in between heat cycles.
#2: The Pilot Light is Out
The pilot light helps the furnace create heat by igniting the burners when the thermostat tells the system it needs more heat. If the pilot light is out, the fuel won’t ignite, and the system can’t heat the air blown through the vents, so you’ll feel cold air instead of warm.
#3: The Air Filter is Dirty
If your HVAC air filter is dirty, it blocks proper airflow, which can lead to the system overheating. Overheating causes the unit to shut down heating as a safety precaution, which means you’ll get cold air instead of heated air.
#4: The Flame Sensor is Dirty
The flame sensor in your furnace is a safety switch that prevents gas from leaking into your home if the furnace ignites, but the sensor doesn’t detect a flame. If the sensor is dirty, it can’t detect the flame and will shut down the furnace.
When the weather is cool, you want your home to be warm. You don’t have to suffer in a freezing house if your furnace is blowing cold air. Contact H.H. Hovey Heating and Cooling for diagnosis and repair you can count on to bring the cozy back to your home.