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Furnace blowing cold air

Troubleshooting Cold Air Coming Out of Your Furnace in Homewood, AL

Feeling cold air coming out of your Homewood, AL, vents creates an uncomfortable living space and might make you worried about your furnace. Below are possible reasons for why your furnace vents are blowing cold air and what to do to fix the situation.

Check the Furnace Thermostat

The furnace will run continuously if the thermostat fan is set to the “on” position. Adjust the thermostat to the “auto” position and see if that fixes the issue.

Replace weak batteries if your thermostat requires them. Do you have a programmable thermostat? You might need to check that you’ve programmed it correctly.

Change the Furnace Air Filter

Your furnace will blow cold air if it overheats. This occurs when the limit switch triggers and shuts down the burners. The fan keeps running to cool down the furnace, and you’ll feel cool air coming from the vents.

A dirty air filter is a common reason for overheating because it restricts the airflow. Any airflow restrictions make the HVAC system work harder until overheating eventually occurs. Replace the dirty air filter with a new one before your heating system works so hard that it causes the need for installing a new furnace or a repair.

Faulty Electronic Ignition

Parts within the hot surface ignition or intermittent pilot sometimes fail inside the electronic ignition system. If this is the case, then it’s time to call in a professional technician to see what type of heating repair your system needs.

Inadequate Gas Supply

A furnace will shut down whenever the required amount of gas isn’t reaching it. You might have a severed line if the gas is on but it’s not getting through to the heating system. Turn the gas off immediately and call your local HVAC technician.

Is cold air coming out of your vents and you aren’t sure what the reason is? Call One Source Heating & Cooling so that we can schedule a maintenance appointment for you.

Image provided by iStock

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