Replacing a Blower Motor

One portion you can count on to replace throughout the life of your furnace is the blower motor. The blower is what circulates the heat about and is continuously functioning. A few basic suggestions can make it less complicated to replace the blower on your personal alternatively of waiting in a long waiting list for a repair person.

What You Require to Know about Blowers

Most blowers are standard, which tends to make them simpler to replace. They are 5 5/8 inches in diameter and are known as the common 48 frame. You can also discover 56 frame blowers and these motors have a 6-inch diameter.

Horsepower is some thing you will have to contemplate when you purchase a new blower. Typical sizes incorporate the 1/8th, 1/6th, 1/5th, and 1/3rd. These are the ones you will see most typically.

RPMs are some thing else you will want to know for replacement. Frequent sizes are 1200 RPM and 900 RPM. Yet another nicely-identified size is the 1550 RPM and is bigger than the other two. Most blowers are single speed, but you will see ones up to 4 speed sometimes.

3 speed blowers are utilized as direct drives with a low speed setting for heating and a higher speed for cooling. Wiring is normal for nearly all blowers to make it less difficult to replace. Black wires indicate high, white is typical, yellow and blue are mediums, and red is low. The brown and brown with white tracer are for the run capacitor.

You have two options for bearing motors. The sleeve bearings last a extended time, but the ball bearings are much better because they can last the life of the furnace. If the motor will run continuously, ball bearings are the greater option. With sleeve bearings, you can take away them and oil the motor as needed.

When you look for a replacement, make positive you don’t pick a decrease horsepower than the one particular you had. However, you also never want to go to a larger horsepower or you will be wasting energy. Outside blowers are normally sealed and indoor blowers are generally open. The open blowers usually have a higher rating, too.

To Do the Replacement

To replace the motor, you will require to shut off the electric to the furnace and reduce the wires to the blower motor. Unbolt it from the furnace and eliminate it. If an electrical box is between you and the motor, you will have to move it out of the way. Clean out the location ahead of installing the new blower. Take photos or notes of how everything looked as you took it out so that you can place the new 1 back the very same way. Connect the wires on the new blower and turn the electrical energy back on to test the unit.
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