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 … right inside your house? If your gas furnace is blowing cold air and giving a chill to your Marshalltown home, it’s time to contact B & G HVAC. Occasionally the loss of warm air from your gas furnace results in a big repair, but a lot of time it can be a simple fix. Here are some of the main reasons your gas furnace might be blowing cold air instead of keeping your home toasty.

Your furnace could be overheating

If you haven’t had ongoing maintenance completed on your gas furnace lately and you’ve forgotten to change your air filter, each could indicate why your furnace is blowing colder air. A dirty air filter can block air from flowing freely through your furnace. If that happens, the furnace might overheat and force the burner to shut down.

Your pilot light may have gone out

It’s probable 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, specifically with older furnaces, for a gust of air to extinguish 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 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

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

No matter what the root of the problem is, B & G HVAC in Marshalltown 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 641-812-2044 or schedule an appointment with us online and we’ll be there to help.

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