Woman freezing cold in house

Why is My Gas Furnace Blowing Cold Air?

As the temps change, the more you feel the colder air gusting outside. And … in your home? If your gas furnace is blowing cold air and giving a chill to your Saint Peters home, it’s time to reach out to C-N-O Comfort Zone. Once in a while a lack of warm air from your gas furnace means a big repair, but a lot of time it can be a small fix. Here are some of the main reasons your gas furnace could be blowing cold air instead of keeping your home toasty.

Your furnace could be overheating

If you haven’t had ongoing maintenance completed on your gas furnace lately and you’ve overlooked changing your air filter, both could be the reason why your furnace is blowing cold air. A dirty air filter can stop air from flowing freely through your furnace. When this happens, the furnace may overheat and force the burner to shut down.

Your pilot light may have gone out

It’s probable a lack of warm air from your gas furnace can be related to something as simple as a pilot light that’s gone out. It’s possible, particularly with older models, for a draft to put out a pilot light. Other reasons for an extinguished pilot light are damaged gas valves or a faulty thermocouple.

Your furnace is dirty

Just as a dirty air filter can mean issues for your gas furnace, so can other furnace components if they aren’t correctly cleaned. A dirty gas burner or flame sensor could cause your furnace to fight to stay lit and not be able to bring warmth to your home.

Your ducts may not be properly sealed

If your ducts aren’t properly sealed or if they have any cracks or holes in them, you may be losing a lot of heated air before it even reaches the vents throughout the home.

No matter what the reason for the problem is, C-N-O Comfort Zone in Saint Peters can help you get your gas furnace up and running at an efficient level again. We can also help keep it running with ongoing, preventive maintenance. Contact us at 636-255-8997 or schedule an appointment with us online and we’ll be there to help.

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