Why My Furnace Blows Cold Air. An easily identifiable cause of cold air blowing is the pilot light on the furnace itself. When that happens, it can lead to the furnace blowing cold air instead of warm.
The flame sensor is dirty. You may require a furnace repair. The thermostat is set on ac or fan.
After That, If The Air Is Still Cold, Something Else Likely Causes The Issue.
You need to replace the switch if it is not working properly. We have been servicing calgary &. It may be blowing cold air because there is no heat source.
The Blower Fan Will Continue To Run Even When Heating Is Off, Thus Creating Even Chillier Conditions Inside.
Furnace blowing cold air because of no fire bad thermostat may cause cold air blowing out the vent when heat is on. If you are in need of a furnace repair you can trust our furnace experts here at jps furnace & air conditioning. So, if the thermostat setting is below room temperature, your furnace will blow lukewarm air.
A Dirty Air Filter Is One Of The Most Common Reasons Furnaces Overheat And Start Blowing Cold Air As A Result.
For example, if someone switches the thermostat. The thermocouple is a sensor, and it is meant to control both the ignition and gas valve. A furnace starts blowing cold air if the flame sensor is dirty.
Pilotless Ignition Furnaces Use A Flame Sensor To Keep The Furnace Burning Once It Starts.
This is a finely tuned device that needs to function properly. If you just turned your heat on for the season or increased the temperature settings, your furnace will need time to adjust. If your furnace overheats, it could end up blowing cold air.
When That Happens, It Can Lead To The Furnace Blowing Cold Air Instead Of Warm.
The contactor is, and the coils aren’t energized The air coming out of your vents might seem rather cool or your home is not staying as warm as the. Your thermostat is set incorrectly.