7 Expert Solutions for a Cold-Air Blasting Furnace

If your furnace is blowing cold air in your home, this signifies an issue with the flame detector, gas supply, air filter, pilot light, or condensate lines. Any of these issues can be fixed easily by sanitizing or removing sections from your gas furnace on your own. Let's discuss the various ways you may be able to resolve these issues on your own.

The remarkable thing is that you can seek assistance for your furnace problem. Start by looking at these seven cold-air blowing furnace choices.

Incorrect Thermostat Setting

You believed you had adjusted the thermostat to a comfortable setting. However, you can feel warm at times and a noticeably cool breeze from the vents at other times. Test the thermostat again. It can be turned on, which means the fan can work continuously, even when the furnace is turned off.

Other Thermostat Issues

Your thermostat may be causing problems for other reasons.

1) If its battery powers it, it's possible that the battery has died.

2) If you recently built a new thermostat, you might have purchased a model that is incompatible with your setup.

Dirty Air Filter

Also, seems to be your furnace on and off all the time? Your air filter may have become clogged. The safety switch will ultimately shut off the burners if airflow to a gas furnace is limited due to a blocked air filter. Since no hot air is made, your fan will begin to blow cold air.

Clogged Condensate Line

High-efficiency furnaces generate condensed liquid as a byproduct of their operation. Usually, this condensate flows away safely. However, the condensate drain line will clog up, resulting in a furnace that blows cold air and leaks water.

Pilot Light Is Out

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

Insufficient Gas Supply

A gas furnace needs a sufficient supply of natural gas to function correctly. Is it possible that your gas supply was cut off for some reason? Is your gas shutoff valve shut? A clogged line could be interfering with the gas flow if you answered no to both issues.

Leaky Ducts

As a result of wear and tear, older ductwork is more likely to develop cracks and leaks. Even if the machine is blowing warm air, heat escapes until it reaches you, leaving you with the impression that your furnace is blowing cold air.

If the furnace in your home is blowing cold air, give us a call by phone at (905) 574-8747 or fill out our Service Request Form to receive assistance. We offer furnace service in Hamilton and the surrounding areas.

We also offer other heating and cooling Hamilton services such as air conditioning repair or replacement. Call us, and we'll check your furnace and ducts so you'll have warm air heating your home for the rest of winter.