Woman freezing cold in house

Why is My Gas Furnace Blowing Cold Air?

As the seasons change, the more you feel the cooler air blowing outside. And … inside your home? If your gas furnace is blowing cold air and giving a chill to your the Bay Area home, it’s time to call Contra Costa Heating & AC. Once in a while a lack of warm air from your gas furnace means a large repair, but often it can be a simple fix. Here are a few of the more common 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 routine maintenance performed on your gas furnace for some time and you’ve forgotten to change your air filter, both could be the reason 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 shut down its burner.

Your pilot light may have gone out

Sometimes a lack of warm air from your gas furnace can be related to something as simple as a pilot light that’s gone out. It’s possible, particularly with older systems, for a gust of air to smother 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 leave you in the cold.

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

No matter what the culprit of the problem is, Contra Costa Heating & AC in the Bay Area can help you get your gas furnace up and operating at an efficient level again. We can also help keep it running with routine, preventive maintenance. Give us a call at 510-343-9841 or schedule an appointment with us online and we’ll be there to help.

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