Why Does Your Furnace Blower Stop Working?

October 23, 2023
Furnace Services in LAKE CHARLES, LA

On a chilly winter evening, you may turn on your furnace to heat your Lake Charles home, and instead of feeling the warm air blowing from your vents, you feel nothing. If your furnace isn’t heating your home, you may have a malfunctioning furnace blower. Luckily, our experienced HVAC technicians are here to help. Here are some of the reasons why your blower may fail.

Furnace Blower Components

As the name indicates, your furnace blower’s job is to push warm air through your home’s ductwork into the interior rooms. The blower consists of a motor, fan blades, ball bearings, capacitors, a filter and an electronic circuit board that controls the blower’s operation. Issues with any of these components may cause a blower to stop working.

Cause and Effect

An annual maintenance check-up can catch many problems before they result in a blower’s failure. Here are some common issues.

Dirty Air Filter

A clogged air filter might prevent enough air from entering the blower compartment. This could cause the motor to work harder and trigger an automatic shutdown. Filters need frequent cleaning or replacement.

Worn-out or Loose Ball Bearings

Ball bearings surround the motor shaft and keep everything running smoothly. If you hear a rattling or grinding noise, it could be a damaged or loose ball bearing causing friction in the moving parts and possibly shutting the system down.

Clogged Motor

Dirt and dust can build up on a motor and interfere with operations. The moving components may be so coated that lubrication is non-existent. Routine maintenance eliminates this problem.

Malfunctioning Circuit Board

Electronic interruptions prevent the furnace from receiving signals from the thermostat and interfere with operations. The fan may run continuously or shut off and not run at all until a technician repairs or replaces the board.

Your Furnace Repair Experts

At ACR Air Conditioning & Heating Inc., we are here for your heating and cooling needs in the Lake Charles region. Our team of HVAC technicians also offers indoor air quality solutions. Contact ACR Air Conditioning & Heating Inc. for your furnace repairs in Lake Charles!

company icon