Why is My Gas Furnace Blowing Cold Air?

November 13, 2018

As the temps change, the more you feel the cooler air gusting outside. And … in your home? If your gas furnace is blowing cold air and putting a chill to your Racine home, it’s time to call Keystone Heating & Air Conditioning Co., Inc. Occasionally the loss of warm air from your gas furnace means a major repair, but a lot of time it can be a small fix. Here are several reasons your gas furnace might be blowing cold air instead of warming up your house.

Your furnace might be overheating

If you haven’t had routine maintenance performed on your gas furnace recently and you’ve forgotten to change your air filter, each could be the reason why your furnace is blowing cool air. A dirty air filter can stop air from flowing freely through your furnace. When this happens, the furnace could overheat and cause 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, specifically with older models, for a gust of air to put out a pilot light. Other causes of an extinguished pilot light are faulty 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 reduce the warmth inside your house.

Your ducts may not be properly sealed

When ducts are correctly 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 culprit of the problem is, Keystone Heating & Air Conditioning Co., Inc in Racine 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 262-358-9468 or book an appointment with us online and we’ll be there to help.