What are the signs that you should replace your furnace blower motor?

When it comes to the comfort of your home, the furnace blower motor is an essential component. Without it, your house wouldn’t be able to warm up during the cold winter months. Unfortunately, like any other appliance, the furnace blower motor can experience issues sometimes, leading to costly repairs or even complete replacement. It’s essential to be aware of the signs of a bad furnace blower motor, so you can take action before the issue becomes worse. Keep reading to learn more.

What are the signs that you should replace your furnace blower motor?

One of the first signs of a bad furnace blower motor is when the furnace is running but not producing any heat. This can happen for a few reasons. The motor may be running too slowly, or it could be struggling to keep up with the demands of the furnace, causing it to overheat. If the motor runs slowly, it could be due to a lack of lubrication or a buildup of dirt and debris. If the motor is overheating, it’s likely due to a faulty capacitor or a worn-out bearing.

Another sign of needing to replace your furnace blower motor is an elevated noise level. A loud, grinding noise from the motor indicates that it’s not running efficiently. A buildup of dirt and debris, a lack of lubrication, or a worn-out bearing can cause this. If you hear a loud, grinding noise, you should call a professional for help.

You should also keep an eye out for excessive dust and debris from your furnace vents. If you notice a lot of dust or debris coming from your vents, it could indicate that the motor isn’t running correctly. This could be due to a lack of lubrication or a buildup of dirt and debris.

Finally, if your energy bills are unusually high, it could signify a bad furnace blower motor. A faulty blower motor can cause your furnace to run longer than usual, increasing your energy bills. If you notice a sudden increase in your energy bills, it’s best to call a professional to inspect the blower motor.

How do you replace a furnace blower?


Replacing a furnace blower motor can be intimidating, but with the proper preparation and knowledge, it can be completed easily. The first step is to determine whether your furnace needs a new motor or not. If the existing motor is making strange noises or visible signs of wear and tear, it may need to be replaced.

After determining that your furnace needs a new blower motor, you should shut off all power sources to prevent electric shock hazards. Then remove any screws or bolts holding the old motor in place and carefully detach it from its mountings before disconnecting any wires connected to it.

Next, inspect the wiring, which may have become damaged over time due to corrosion; these connections must be secure for proper operation of the new motor so make sure they are correctly reconnected after replacing them with fresh ones if necessary. You will also want to check for debris build-up around the fan blades, as this could reduce airflow efficiency if left uncleaned during installation. Vacuum out as much dust and dirt as possible before installing your new blower motor assembly.

Ensure all mounting hardware is tight when installing the replacement unit, ensuring no loose parts remain in place before powering up again. Finally, run through both heating cycles to test your replacement.

Overall, replacing a furnace blower motor is an important task that requires detailed steps and careful consideration. Taking the time to follow the steps ensures the job is done right and provides a safe, reliable, and long-lasting result.