Why Is My Furnace Blowing Cold Air

Before trying to check the air filter, ensure the furnace thermostat is in the off setting.

Why is my furnace blowing cold air. Many of these issues are able to be easily solved on your own by sanitizing or replacing components in the gas furnace. If your furnace is overheating, that means your heat exchanger is getting too hot. Why isn’t my furnace blowing any air?

2) furnace overheated let’s say your furnace blows hot air, then cold air, but then stops blowing any air at all after a while. If your heater starts by throwing warm air out of your registers, but you are soon left with a heater blowing cold air, then i would suspect that your flame sensor needs to be cleaned. Seek help from the experts.

An overheated furnace will cause cold air to emit from vents. When a heating cycle begins and your air handler turns on, that cool air will blow out of your registers before warm air does. If this is the cause of your furnace problem, your furnace will blow warm air, then cold air, and eventually stop blowing air all together.

There are many reasons an hvac (heating, ventilation, air conditioning) system might stop working. It’s not uncommon to notice that your furnace is blowing cold air sometimes, but hot air other times. When your furnace overheats it goes from blowing cold air to triggering the limit switch.

If your furnace is blowing cold air in your home, this is a sign of an issue with the flame detector, gas supply, air filter, pilot light, or condensate lines. Most of these issues are not serious, and you can eliminate them if you seek early help. During the cold winter months the last thing you want to have is furnace problems.

Especially if your furnace is blowing cold air. 7 reasons your heater blows cold air/ac blows hot air. Once you turn the thermostat back on, the furnace should resume blowing hot air.