Why Is My Furnace in Solomons, MD, Blowing Cold Air?

Furnaces shouldn’t blow cold air unless they’re set to fan mode. Several things could be wrong with the furnace in your home in Solomons, MD, if it’s blowing cold air. Read on to learn about them.

Dirty Flame Sensor

When a flame touches the flame sensor, it sends a small electrical current to the furnace board, signaling to the system that the flame is on. If the sensor is dirty or grimy, it won’t create the current. In most cases, this will cause short cycling, but in some instances, the furnace will continue to run without the flame on.

Clogs in the Condensate Lines

The furnace’s condensate line is usually a hose or pipe that shunts water from the condensate line somewhere else. If the line develops clogs, the water will back up. That will cause the burners to turn off for safety, and your furnace will blow cold air thereafter.

Leaky Ducts

If your ducts have holes in them, cooler air can seep into them. Then, the furnace will blow the combined warm air from itself and cool air from the leaks into your home. Because the air won’t be the temperature that you set, it’ll seem cold.

Wrong Thermostat Setting

Sometimes, if your thermostat has a fault, it’ll get stuck in the “ON” position. This will cause your furnace to run all the time even after the gas burners shut off because your home is at the desired temperature. One of our professional service technicians can help you pick a new thermostat.

Filter That Needs Replacing

When there’s too much dirt in the furnace filter, the appliance will have poor airflow. In that case, your furnace will sometimes overheat. When it does, the burners will shut off as a precaution, leaving only cold air blowing from your vents.

As a Better Business Bureau-accredited business with an A+ rating, we’re qualified to handle any furnace problems. So, whenever you need furnace repair services in Solomons, MD, call B.M.C. Clower Heating and Air Conditioning.

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