It’s never a pleasant experience when cold air is coming out of your Tarrytown, TX, furnace. Discover three common reasons for this frustrating situation and what you can do to fix it.

Incorrect Thermostat Fan Setting

Setting your thermostat to the “on” position causes the furnace blower to run on a continuous basis. It will do so even when the burners aren’t operating. This simply means that the furnace constantly blows air through the vents even when that air isn’t heating.

Switch your thermostat from the “on” position over to the “auto” position. This should ensure that the blower runs only when the burners heat the air. If this doesn’t fix the issue, then you should schedule a furnace repair appointment so that your HVAC technician can figure out the actual problem.

Overheated Furnace

A group of metal coils that make up the heat exchanger creates the heat that warms the air inside your furnace. It’s a simple process where the air picks up heat as it blows over the coils.

If the heat exchanger becomes too hot, then the system takes notice and turns off the burners. However, the fan stays in operation in order to aid with cooling down the heat exchanger. Cold air blows through your vents as a result.

Dirty Air Filter

A dirty air filter could be the cause of the aforementioned overheating process. Clogged air filters restrict airflow to the heat exchanger.

Replace the air filter to see if that fixes the cold air problem. If you still notice cold air coming through the vents after you install a new filter, it’s time to call your HVAC specialist. Allowing your furnace to continuously overheat might damage it to the point that you require a system replacement.

Have you tried doing everything you can to adjust your thermostat or replace the filter and still feel cold air coming from the furnace? Contact AC Pros Air Conditioning & Plumbing to schedule your next furnace maintenance appointment.

Image provided by iStock

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