Woman freezing cold in house

Why is My Gas Furnace Blowing Cold Air?

As the temps change, the more you feel the cooler air gusting outside. And … right inside your house? If your gas furnace is blowing cold air and putting a chill to your Mechanicsville home, it’s time to contact M & S Heating & Air LLC. Occasionally an absence of warm air from your gas furnace results in a large 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 ongoing maintenance done on your gas furnace lately and you’ve forgotten to change your air filter, both 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 might overheat and force the burner to shut down.

Your pilot light may have gone out

Sometimes 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 gust of air to extinguish a pilot light. Other reasons for an extinguished pilot light are defective 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 appropriately cleaned. A dirty gas burner or flame sensor could cause your furnace to struggle 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 can get to the vents.

No matter what the root of the problem is, M & S Heating & Air LLC in Mechanicsville 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. Call our experts at 301-363-4699 or arrange an appointment with us online and we’ll be there to help.

Back To Blog