Why is My Gas Furnace Blowing Cold Air?

November 13, 2018

As the seasons change, the more you feel the colder air blustering outside. And … in your home? If your gas furnace is blowing cold air and adding a chill to your Mobile home, it’s time to call Farnell Heating & Air Conditioning Inc. Sometimes an absence of warm air from your gas furnace results in a big repair, but many times it can be a small fix. Here are a few of the more common reasons your gas furnace may be blowing cold air instead of keeping your home toasty.

Your furnace could be overheating

If you haven’t had routine maintenance done on your gas furnace recently and you’ve overlooked changing your air filter, both could signal why your furnace is blowing colder air. A dirty air filter can prevent air from flowing freely through your furnace. If that 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 smother a pilot light. Other factors when it comes to an extinguished pilot light are defective gas valves or a faulty thermocouple.

Your furnace is dirty

Just as a dirty air filter can mean problems 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 struggle to stay lit and leave you in the cold.

Your ducts may not be properly sealed

When ducts are correctly sealed or if they have any cracks or holes in them, you might be losing a lot of heated air before it ever reaches your vents.

No matter what the root of the problem is, Farnell Heating & Air Conditioning Inc in Mobile 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 251-471-2674 or book an appointment with us online and we’ll be there to help.