Condenser Fan Motors

Use the table below to help select the type of condenser fan you are looking for or use our replacement motor form
and complete as many details as you can and we will select the replacement for you.

Click below to see all condenser fans that are:

Horse Power	Make	Type
1/15 HP	AO Smith	Lug Mount
1/10 HP	Fasco	Total Enclosed
1/8 HP	GE/Mars	Open Drip Proof
1/6 HP	Marathon Electric	2 Speed
1/5 HP	Rheem	460 Volt
1/4 HP	Carrier	OEM
1/3 HP	Emerson	Sleeve Bearing
1/2 HP	Ruud	Ball Bearing
3/4 HP	York	3 Phase
1 HP	Lennox	825 RPM
1-1/2HP		All Condenser Fan Motor

How to Replace the Fan Blade
Before you can replace the motor, the fan blade will have to be remove or a new fan blade will need to be install at the same time. If the hub of the fan blade very rusty or the blade is damaged at all the just replace the fan blade at the same time. Most fan blades can be successfully removed with out damaging it, if you are careful and properly prep the shaft. If the hub gets bent as you remove it then the fan blade will be unbalance. This will quickly wear out the motor bearing and may cause excessive vibration. Vibrations can cause damage to other components of the condenser or crack a refrigerant line and lead to costly repairs.

Look closely at the hub of the fan blade; if the blade has been replaced before then it may have detectable hub. Look for 6 screws located around the hub that hold the blade in place. These screws are set in with lock tight and will be tight to remove but makes changing the motor much easier. The hub by itself is easy to remove with any 2 or 3 way puller. If the blade cannot be removed separately then a hub puller maybe required to remove the fan blade with out damage. However, most fan blades can be removed without a puller.

Clean the exposed shaft above the blade. An open mesh sand cloth works best for this to remove any rust. Clean the shaft until it is shiny again as new. Any rust will hang up and damage the hub as you try to remove it. Remove the blade set screws completely and set aside. It's a good idea to replace the setscrews if you can when you are reinstalling the blade. You should be able to locate setscrews at a local hardware store. Use penetrating oil around hub and spray directly into the setscrew openings. Let this soak in for a few minutes before you start. If there is a keyway holding the blade in place then the blade must be pull straight off unless the keyway can be removed first. If you do not have a puller, try using 2 parallel poles such as angle steel or 1/2" pipe on each side of the shaft, supporting the fan hub Cross the rods between 2 work benches and let the motor hang free below. Then use a center punch on the end of the shaft tap on the end of the shaft. Try knocking the keyway through the hub or just to get is move a little will help to release its grip. Do not hit the shaft directly or you will mushroom the end of the shaft and will not be able to move the blade past the end of the shaft. If the shaft end is damaged, then use a metal file on the shaft end before moving the blade.

Most condenser fan motors have the smaller 1/2" shaft, and a keyway is not used. After the shaft is cleaned, place a wrench under the fan blade, near the motor and rotate it back and forth to loosen the shaft inside the fan hub. Do not grip the shaft above the blade. The wrench will leave burs that will hang up the hub. Hold the hub in one hand and let the motor hang free. The weight of the motor should start pull the shaft free as you move the shaft. The setscrews leave a bur on the shaft that will hang up the hub. After the hub has passed the area where the setscrews where the blade should come right off. If the shaft is clean then it should pull free. Watch you toes, because the motor may drop. Hold it close to the ground or a workbench just is case. If you are on a roof top unit you can seriously damage the roof if you let the motor drop.

Do not heat the hub with a torch. Most hubs are aluminium, which shrinks after it has been heated and cools back down. You might get the blade off, but it will not go back on to the new motor.

How to Select a Condenser Fan Motor
Over the life of your Air Conditioner you can expect to replace the condenser fan motor at least once. On the chart below you will see a list of characteristics that you need to match up for an after market Condenser fan motor. When replacing the motor, be sure to clean the the shaft with sand cloth to remove any rust. Remove the blade set screws completely and set aside. It's a food idea to replace the set screws, which you should be able to locate at any hardware store. Use a good penetrating oil to loosen the blade and spray the oil in the set screw openings. Place a wrench under the fan blade, near the motor and gently try to rotate the shaft inside the fan hub. This should break the fan blade loose.

Condenser Motor Selection Guide

CHARACTERISTIC	SAMPLE
Horse Power	Size can range from 1/6 on small residential units to 1.5 horsepower on large rooftop units.
Amps	Select a motor with the same or slightly higher current draw, even if the next larger HP is required.
Service Factor	S.F. is the additional current draw above the rated amps the motor can safely operate with out over loading the motor.
RPM	Revelations per minute the fan blade will turn at. Most use 1075 RPM. On low noise units 850 is used. You must use the same as the original motor to move the proper CFM
Mounting	3 Lug Mount, Through bolt mount, Belly Band, wrap around mounting bracket, or Saddle/Cradle Mount for belt driven fans
Position	Shaft Up, Shaft Horizontal, Shaft Down or Any Angle Mount. Most replacement motor can be mounted in any position.
Rotation	CW, CCW, or Reversible. Most field replacement motor can be switch from CW to CCW by a simple interchange of 2 wire connections. 3 Phase motors can be switch by interchanging any two leads.
Capacitor
Shaft Diameter	1/2 HP and under are 1/2" with one or two flat sides - larger motors will be 5/8" shaft with a keyway
Shaft Length	Motor shafts are 3" to 6-1/2". If the shaft is to long it can be cut to the desired length.
Body Diameter	Most AC condenser fan motors are 5.6" or 5-5/8" diameter. Refrigeration fans can be 5" or smaller
Body Lenght