Why is My Gas Furnace Blowing Cold Air?

Heating

As the temps change, the more you feel the cool air gusting outside. And … inside your home? If your gas furnace is blowing cold air and adding a chill to your Saint Louis home, it’s time to call Morgner Incorporated Air Conditioning & Heating. Occasionally the loss of warm air from your gas furnace means a major repair, but many times it can be an easy fix. Here are several reasons your gas furnace could be blowing cold air instead of making your home warm and cozy.

Your furnace could be overheating

If you haven’t had ongoing maintenance performed on your gas furnace lately and you’ve neglected to replace your air filter, each could indicate why your furnace is blowing cool air. A dirty air filter can prevent air from flowing freely through your furnace. When this happens, the furnace could overheat and force the burner to shut down.

Your pilot light may have gone out

It could be that 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 models, for a breeze 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 mean issues for your gas furnace, so can other furnace components if they aren’t appropriately cleaned. A dirty gas burner or flame sensor could cause your furnace to struggle 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 sealed properly 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 reason for the problem is, Morgner Incorporated Air Conditioning & Heating in Saint Louis can help you get your gas furnace up and operating at an efficient level again. We can also help keep it running with routine, preventive maintenance. Contact us at 314-961-0875 or arrange an appointment with us online and we’ll be there to help.

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