Why is My Gas Furnace Blowing Cold Air?

November 13, 2018

As the weather changes, the more you feel the colder air gusting outside. And … inside your home? If your gas furnace is blowing cold air and giving a chill to your Thedford home, it’s time to reach out to Taylor's Heating & Air Conditioning. Sometimes an absence of warm air from your gas furnace means a big repair, but many times it can be a simple fix. Here are some of the main reasons your gas furnace may be blowing cold air instead of making your home warm and cozy.

Your furnace could be overheating

If you haven’t had regular maintenance performed on your gas furnace lately and you’ve overlooked changing your air filter, each could be the reason why your furnace is blowing cold air. A dirty air filter can block 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

Sometimes 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, particularly with older models, for a gust of air to put out a pilot light. Other causes of 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 properly 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

If your ducts aren’t properly sealed or if they have any cracks or holes in them, you could be losing a lot of heated air before it ever reaches your vents.

No matter what the root of the problem is, Taylor's Heating & Air Conditioning in Thedford 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 519-296-4437 or book an appointment with us online and we’ll be there to help.