Why is My Gas Furnace Blowing Cold Air?

Heating

As the temps change, the more you feel the cool air blowing outside. And … inside your home? If your gas furnace is blowing cold air and putting a chill to your Denver home, it’s time to call Northglenn Heating & Air Conditioning, Inc.. Once in a while an absence of warm air from your gas furnace calls for a major repair, but a lot of time it can be an easy 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 may be overheating

If you haven’t had routine maintenance completed on your gas furnace for some time and you’ve forgotten to change your air filter, each could signal 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 could overheat and force the burner to shut down.

Your pilot light may have gone out

Sometimes a lack of warm air from your gas furnace can be attributed to something as simple as a pilot light that’s gone out. It’s possible, especially with older systems, for a gust of air to put out a pilot light. Other reasons for an extinguished pilot light are faulty gas valves or a faulty thermocouple.

Your furnace is dirty

Just as a dirty air filter can cause 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 reduce the warmth inside your house.

Your ducts may not be properly sealed

If your ducts aren’t sealed properly or if they have any cracks or holes in them, you could be losing a lot of heated air before it can get to the vents.

No matter what the root of the problem is, Northglenn Heating & Air Conditioning, Inc. in Denver can help you get your gas furnace up and working at an efficient level again. We can also help keep it running with ongoing, preventive maintenance. Call our experts at 303-452-4146 or arrange an appointment with us online and we’ll be there to help.

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