Woman freezing cold in house

Why is My Gas Furnace Blowing Cold Air?

As the temps change, the more you feel the cool air gusting outside. And … right inside your house? If your gas furnace is blowing cold air and putting a chill to your Carlsbad home, it’s time to call Banister's Heating & Air Conditioning Services. Occasionally the loss of warm air from your gas furnace means a big repair, but often it can be a small fix. Here are a few of the more common reasons your gas furnace might be blowing cold air instead of keeping your home toasty.

Your furnace might be overheating

If you haven’t had ongoing maintenance performed on your gas furnace lately and you’ve overlooked changing your air filter, each could be the reason why your furnace is blowing colder air. A dirty air filter can block air from flowing freely through your furnace. If this occurs, the furnace may overheat and cause the burner to shut down.

Your pilot light may have gone out

Sometimes 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, especially with older systems, for a breeze to smother a pilot light. Other reasons for an extinguished pilot light are defective gas valves or a faulty thermocouple.

Your furnace is dirty

Just as a dirty air filter can mean challenges 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 battle 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 ever reaches your vents.

No matter what the culprit of the problem is, Banister's Heating & Air Conditioning Services in Carlsbad can help you get your gas furnace up and operating at an efficient level again. We can also help keep it running with regular, preventive maintenance. Call our experts at 575-446-3948 or arrange an appointment with us online and we’ll be there to help.

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