Woman freezing cold in house

Why is My Gas Furnace Blowing Cold Air?

As the seasons change, the more you feel the colder air blowing outside. And … right inside your house? If your gas furnace is blowing cold air and adding a chill to your Lexington home, it’s time to call James Heating & A/C, Inc. Sometimes an absence of warm air from your gas furnace calls for a large repair, but a lot of time it can be a small fix. Here are a few of the more common reasons your gas furnace could be blowing cold air instead of warming up your house.

Your furnace might be overheating

If you haven’t had routine maintenance done on your gas furnace lately and you’ve overlooked changing your air filter, each could be the reason why your furnace is blowing cool air. A dirty air filter can block air from flowing freely through your furnace. If this occurs, the furnace may overheat and shut down its burner.

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 systems, for a gust of air to extinguish a pilot light. Other factors when it comes to an extinguished pilot light are damaged 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 appropriately cleaned. A dirty gas burner or flame sensor could cause your furnace to fight to stay lit and leave you in the cold.

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 even reaches the vents throughout the home.

No matter what the reason for the problem is, James Heating & A/C, Inc in Lexington 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. Give us a call at 336-853-6070 or book an appointment with us online and we’ll be there to help.

Back To Blog