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 … in your home? If your gas furnace is blowing cold air and giving a chill to your Genoa home, it’s time to contact Assured Appliance and Heating & Air. Sometimes a lack of warm air from your gas furnace calls for a big repair, but many times it can be a simple fix. Here are a few of the more common 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 performed on your gas furnace lately and you’ve overlooked changing your air filter, each could signal why your furnace is blowing colder air. A dirty air filter can prevent 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, especially with older furnaces, for a breeze to extinguish a pilot light. Other factors when it comes to an extinguished pilot light are faulty gas valves or a faulty thermocouple.

Your furnace is dirty

Just as a dirty air filter can cause 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 battle to stay lit and leave you in the cold.

Your ducts may not be properly sealed

When ducts are correctly sealed or if they have any cracks or holes in them, you might be losing a lot of heated air before it ever reaches your vents.

No matter what the reason for the problem is, Assured Appliance and Heating & Air in Genoa can help you get your gas furnace up and working at an efficient level again. We can also help keep it running with routine, preventive maintenance. Call our experts at 847-306-8990 or schedule an appointment with us online and we’ll be there to help.