How To Troubleshoot A Bad Furnace Blower Motor

Furnace blowers are an essential part of any heating system. They push air through ductwork and vents to distribute heat evenly throughout your house.

Furnace Blower Motor

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Unfortunately, furnace blowers sometimes fail to perform properly and cause problems in your HVAC unit. This article explains how to troubleshoot one common problem with your furnace blower motor.

Check The Filters

One of the most common causes of faulty furnace blower motors is dirty filters. Dirty or clogged filters prevent air from flowing freely through the heater, causing reduced airflow.

Clean or replace the filters regularly to ensure proper airflow throughout your system. If you notice that your blower has stopped working, replace the filter immediately

Check the Motors

Check the belt tension and alignment of the two electric motors. The motor belts should run smoothly and consistently without skipping or dragging.

If your blower motor fails, the motors may become loose or disconnected from the blower housing. Try tightening the bolts holding the motors to the blower casing. If necessary, adjust the electrical connections for each motor.

Test the Safety Switch

• Test the safety switch if the blower still does not operate properly after attempting these three fixes. Next, remove the cover plate on the back side of the blower base.
• Replace the safety switch if it appears damaged or worn. Be sure to tighten the screws securely.

Finally, contact a professional heating company for maintenance services or repairs.

Frequently Asked Question

Why Does My Furnace Keep Blowing hot Air?

There could be a few reasons if your furnace is blowing hot air. The most common problem is a clogged furnace filter. If the filter is not cleaned regularly, it can become full of dirt and debris, which will cause the furnace to overheat and blow hot air.

Additionally, if the furnace isn't getting enough oxygen from the air, it will also produce hot air. It can happen if there are large gaps between the walls of the furnace or if the vents are blocked. In either case, you'll need to take action to fix the problem and prevent it from happening again.

How to replace the blower motor?

The blower motor is likely the culprit if your heating or cooling system isn't working as it should. Blower motors are typically easy to replace and can be done by anyone with basic mechanical skills. Here's how to do it:

• Shut off the power to the unit. If the unit has a switch, flip it to "off."
• Disconnect the wires that go to the unit's blower motor from the terminal block.
• Remove the old blower motor by removing the screws and nuts that hold it.
• Install a new blower motor by reversing these steps. Be sure to reconnect all of the wires before screwing everything back together.