7 Expert Solutions For A Furnace That Is Blowing Cold Air

On a freezing winter day, what can be worse than your furnace blowing cold air. A problem with the flame detector, gas supply, air filter, pilot light, or condensate lines could cause your furnace to spew chilly air into your home. You can readily resolve many of these problems by cleaning or replacing parts of the gas furnace on your own. Let’s look at some of the different options for resolving these problems.

Clogged Air Flters

If your furnace’s air filter is clogged with dust, filth, or soot, it will block fresh air. Prolonged heat cycles and overheating concerns are common indicators of filthy air filters. Your heater will pump cool air throughout your home if it is overheated.

Solution: If the filter is disposable, replace it. Alternatively, clean a permanent filter. Replace the dirty air filter with a clean one to reestablish the circulation of warm air in your home.

Pilot Light

One of two things could be causing your pilot light to go out. Either it has just blown out, or it was never lit properly, to begin with. The latter could be caused by a blockage caused by dirt and soot or by a broken thermocouple.

Solution: You can try to light it yourself, but if it does not work out, look for the furnace repair in Mission Viejo.

Clogged Condensate Line

If the condensate pipes become clogged, the burners may become inactive, causing the furnace to vent chilly air into your home. Not every time it happens, but sometimes the condensed liquid clogs the condensate line.

Solution: Have the condensate pipe cleaned by a heating and conditioning specialist.


Its battery may have run down. Another cause is that it is not compatible with your device, and if that is the case, you might need the help of a pro to fix this.

Solution: You can replace the battery or look for furnace repair in Mission Viejo.

Insufficient Gas Supply

A gas furnace requires a sufficient supply of natural gas to function correctly. Is it possible that it cut off your gas flow for whatever reason? Is your gas shut-off valve shut? If you answered no to both questions, a clogged pipe could be interfering with gas flow.

Solution: A specialist should handle this work, so look for furnace repair in Mission Viejo.

Damaged Duct

Because of gaps and breaches in your home’s duct, the furnace may be venting cold air. Cold air from your attic might enter the ductwork through these small to large gaps. Your furnace may be blowing warm air and functioning well, but by the time it reaches your vents, it may have leaked out.

Solution: Hire a professional to get your home’s ducts sealed

Flame Detector

If the flame detector is covered in dust and grime, you will lose all the heat, and the furnace will start blowing the cold air.

Solution: Clean the flame detector.

South Country Air Services provides the best and affordable furnace repair in Mission Viejo. We are dedicated to implementing the best service possible for our clients. You can call us at (949)-933-3130 or at (949) 933-3130.