Why is My Gas Furnace Blowing Cold Air?

Heating

As the seasons change, the more you feel the cool air blowing outside. And … right inside your house? If your gas furnace is blowing cold air and giving a chill to your Elmhurst home, it’s time to call Alan Heating Air Conditioning, Inc.. Sometimes the loss of warm air from your gas furnace results in a big repair, but a lot of time it can be a small fix. Here are several reasons your gas furnace could be blowing cold air instead of keeping your home toasty.

Your furnace may be overheating

If you haven’t had ongoing maintenance completed on your gas furnace for some time and you’ve overlooked changing your air filter, either could indicate why your furnace is blowing colder air. A dirty air filter can block air from flowing freely through your furnace. When this happens, the furnace might overheat and shut down its burner.

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 extinguish a pilot light. Other reasons for an extinguished pilot light are faulty gas valves or a faulty thermocouple.

Your furnace is dirty

Just as a dirty air filter can result in 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 fight to stay lit and not be able to bring warmth to your home.

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 could be losing a lot of heated air before it can get to the vents.

No matter what the culprit of the problem is, Alan Heating Air Conditioning, Inc. in Elmhurst can help you get your gas furnace up and running at an efficient level again. We can also help keep it running with routine, preventive maintenance. Give us a call at 630-833-1100 or schedule an appointment with us online and we’ll be there to help.

Back To Blog