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Why is My Gas Furnace Blowing Cold Air?

November 13, 2018

As the seasons change, the more you feel the cool air blustering outside. And … right inside your house? If your gas furnace is blowing cold air and putting a chill to your Sacramento home, it’s time to reach out to American HVAC Inc. Sometimes the loss of warm air from your gas furnace results in a big repair, but many times it can be a small fix. Here are a few of the more common reasons your gas furnace might be blowing cold air instead of making your home warm and cozy.

Your furnace may be overheating

If you haven’t had regular maintenance completed on your gas furnace lately and you’ve overlooked changing your air filter, both could signal 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

It could be that 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 models, for a draft 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 result in issues 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

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

No matter what the root of the problem is, American HVAC Inc in Sacramento 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. Give us a call at 916-243-6714 or book an appointment with us online and we’ll be there to help.