View Here : Furnace Not Blowing Hot Air

But my furnace was blowing hot air, and my family wasn’t complaining any more, so I didn’t complain either… at least not out loud. But I was complaining a little on the inside. I’d watched the repair guy do his 10 minute job, and it didn’t look difficult at all.

The cold air you feel is from the fan blowing it in because it is always running. To fix this issue is simple, just flip the fan switch from “ON” to “AUTO.” Auto setting will tell the furnace only to blow warm into your home when the furnace is on. Furnace is Overheating. Furnace overheating can be the cause of your cold air dilemma.

The dirty air filter will block airflow, causing the furnace to run longer to heat your home until it overheats. Solution: Change the air filter and see if your furnace starts only blowing warm air. DON’T ignore this problem. Repeated overheating will hurt the furnace’s heat exchanger, which is expensive to fix.

Furnace not blowing cold air - check main limit sensor.

Furnace is not heating, turning on, or blowing hot air. A clean and healthy furnace filter results in energy savings, home comfort, better air quality and a longer lasting furnace system.

A furnace blowing cold air is due to a failure of the heating element, according to Hannabery HVAC. In a gas furnace, this may be due to a problem with the pilot light or gas supply, while an electrical furnace could blow cold air if the heating element fails or trips its breaker.

"Why is My Furnace Blowing Lukewarm Air?" February 24, 2015. ... New heat pump owners often notice that the air coming out of the vents isn't as warm as when they had a gas furnace. Heat pumps typically produce air that is about 90-100degF, whereas furnaces can produce air as high as 120-125degF.

Reduces volume of hot air blown out– Blocked return air means the furnace has less to blow out your supply vents, leaving you chilly. Furnace shuts down– Because your furnace has to run longer to heat your home, the heat exchanger overheats, causing the furnace to automatically shut down.

Gas furnace not blowing hot air? Just as with switches, someone may have turned off a gas valve and then forgotten to turn it back on. Trace the gas line back from the furnace to the meter, and if you see a handle that's perpendicular to the gas pipe, turn it so it's parallel. Gas furnace repair is depends on how old your furnace is.

The blower motor itself does not create the heat; rather it blows the heated air created by the furnace through the system's ductwork. ... check the cold-air return to ensure the filter is clean ...