Furnace Blowing Out Cold Air Heat

Find the furnace s pilot light assembly and reset switch the assembly and switch should be near the bottom of.

Furnace blowing out cold air heat.

2 furnace overheated let s say your furnace blows hot air then cold air but then stops blowing any air at all after a. 3 pilot light is out if your gas furnace is only. 1 thermostat is set to on is your furnace blowing cold air only sometimes. Seems silly but you d be surprised how often this has happened.

2 clogged air filter. 7 reasons your heater blows cold air ac blows hot air 1 dead batteries in thermostat. A furnace blowing cold air could be due to your thermostat. Turn off your furnace turn your thermostat from heat to off.

Again using occam s razor we can assume that the next likely culprit for your heater blowing cold air is your thermostat. Have an expert inspect your ducts along with the furnace. Turn the knob to off and wait 3 5. When a heating cycle begins and your air handler turns on that cool air will blow out of your registers before warm air does.

Otherwise your electric heater or gas furnace will not turn on. If you only feel your furnace blowing cold air briefly and the air is quickly replaced by warm air this is the most likely explanation. Is the furnace s blower constantly running. Basically the furnace isn t lighting the fuel meaning it can t heat your home either.

The fan setting on your thermostat has two options on and auto. Ensure that your thermostat is set higher than the temperature in your home. Your thermostat s fan setting. Try relighting the pilot light following these steps.

One of the most common causes of a furnace blowing cold air is not actually a repair at all. If you notice your furnace only blows cold air on occasion but your home is still maintaining its temperature than this may be simply a setting on your thermostat.