If your furnace blower motor is making a lot of noise or has given out entirely, you may be wondering how to remove a blower motor. Only you can determine your ability to remove and replace your furnace blower motor. Keep in mind that you will need to make electrical connections and if you are not absolutely positive that you know what you are doing, please call a trained service technician.
When working with a furnace blower motor, it is extremely important that you turn off power to the blower motor using the circuit breaker, as well as turning off your furnace while you are working on the blower. If you believe that the problem with the blower motor is with the blades of the fan, remove them first for a visual inspection. If you experience any difficulty in removing the blades, do not use a hammer or try to force the blades off. This could damage the drive shaft and may require you to replace either the shaft or the entire motor.
If your furnace blower motor smokes or smells funny, in all likelihood you have experienced an electrical failure and the motor is probably done. Before removing the motor it may be a good idea to take pictures of the blower mounts and wiring for your reference when you install the replacement motor.
If you take the proper safety precautions and have a good understanding of what you are doing, you should be able to remove the furnace blower motor safely and quickly. It is always recommended that you perform a thorough diagnostic along the way to ensure that you are not about to replace a blower that could otherwise be repaired. And if at any point you are not comfortable, call a professional to finish the job right.