Woman freezing cold in house

Why is My Gas Furnace Blowing Cold Air?

As the weather changes, the more you feel the cooler air blustering outside. And … in your home? If your gas furnace is blowing cold air and putting a chill to your McHenry home, it’s time to contact Jett's Heating & Air Inc.. Occasionally a lack of warm air from your gas furnace calls for a big repair, but many times it can be an easy fix. Here are a few of the more common reasons your gas furnace could be blowing cold air instead of making your home warm and cozy.

Your furnace could be overheating

If you haven’t had regular maintenance completed on your gas furnace for some time and you’ve overlooked changing your air filter, each could be the reason 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 cause 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 related to something as simple as a pilot light that’s gone out. It’s possible, particularly with older furnaces, for a draft to put out 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 result in problems 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 not be able to bring warmth to your home.

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 culprit of the problem is, Jett's Heating & Air Inc. in McHenry can help you get your gas furnace up and running at an efficient level again. We can also help keep it running with ongoing, preventive maintenance. Contact us at 815-410-1128 or arrange an appointment with us online and we’ll be there to help.

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