Why is My Gas Furnace Blowing Cold Air?

Heating

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 Pella home, it’s time to call Van Haaften Plumbing & Heating. Occasionally the loss of warm air from your gas furnace results in a large repair, but a lot of time it can be a simple 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 done on your gas furnace lately and you’ve neglected to replace your air filter, either could indicate why your furnace is blowing colder air. A dirty air filter can stop air from flowing freely through your furnace. If this occurs, 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 credited to something as simple as a pilot light that’s gone out. It’s possible, especially with older models, for a breeze to smother a pilot light. Other factors when it comes to an extinguished pilot light are defective gas valves or a faulty thermocouple.

Your furnace is dirty

Just as a dirty air filter can mean problems 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

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 culprit of the problem is, Van Haaften Plumbing & Heating in Pella can help you get your gas furnace up and operating at an efficient level again. We can also help keep it running with ongoing, preventive maintenance. Contact us at 641-628-3621 or arrange an appointment with us online and we’ll be there to help.

Back To Blog