Why is My Gas Furnace Blowing Cold Air?

Heating

As the seasons change, the more you feel the colder air blowing outside. And … in your home? If your gas furnace is blowing cold air and adding a chill to your Lexington home, it’s time to call Kelley Mechanical. Occasionally a lack of warm air from your gas furnace results in a major repair, but many times it can be a small fix. Here are some of the main reasons your gas furnace might be blowing cold air instead of keeping your home toasty.

Your furnace could be overheating

If you haven’t had regular maintenance performed on your gas furnace for some time and you’ve forgotten to change your air filter, both could be the reason why your furnace is blowing colder air. A dirty air filter can prevent air from flowing freely through your furnace. If this occurs, the furnace may 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 attributed to something as simple as a pilot light that’s gone out. It’s possible, specifically with older systems, for a breeze to put out a pilot light. Other factors when it comes to an extinguished pilot light are faulty gas valves or a faulty thermocouple.

Your furnace is dirty

Just as a dirty air filter can cause issues 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 fight 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 might be losing a lot of heated air before it even reaches the vents throughout the home.

No matter what the root of the problem is, Kelley Mechanical in Lexington 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. Give us a call at 859-209-3003 or book an appointment with us online and we’ll be there to help.

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