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Intertherm blower motor is shot and i need a one thats compatable

Intertherm blower motor is shot and i need a new one but i cant find the one i need all the info on it is that its a half horse motor and2 speed /1070 rpms where can i find a compatible motor at a reasonable price will a motor with similar size shaft and rpms work?

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  • Dennis Boxerman May 11, 2010

    match the specs. Frame size (FR) usually 48 or 56 Voltage Amps Service Factor (SF) Some have it and some don't. RPM's Shaft size Shaft rotation (CW or CCW) Best advice is take it with you and go to Grainger. They can most likelymatch it. If you got it in your hand, less chance of OOPS.



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Yes bring the motor to a a/c service dealer and they can match it up for you

Posted on Jul 03, 2009


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SERIAL # IK0487-01713

I googled: Intertherm Air Conditioners There are a number or articals that may help you find what you need. One referance to a youtube "review" Hope this helps. I was going mention "how do you know it's a bad blower motor? But depending on age and use anything is possible. Usually the motor has a model number on it. That would be the safest way to find an exact replacement.

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Hello, since you replaced the capacitor it only leaves either a bad control board or bad blower motor. If there is 120 volts to the motor then the motor is shot, however is there is no voltage to the motor then the control board must be replaced.

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I usually bring my motors to a rebuild shop, however 40 years is a long time for a Coleman. Ever considered a new system?

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1 Answer

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Since it goes ahead and starts I would be more inclined to look closely at cleaning the motor and lubing if it has oil ports.Remove and clean out blower if you can as they can gather several pounds of dirt and debris over the years. If you have compressed air available then blow out ventilation ports on motor and blades on blower
Also check side to side movement of motor shaft as it may have bearing about worn out.If it has much more than 1/8 inch movement than you probably are getting close to needing a new motor Hope this helps you. Thanks.

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1 Answer

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1 Answer

How to replace Intertherm M1 Combustion Blower Assembly on an Intertherm M1MB 070A BW Gas Furnace Series #m1D020401209? I think this is the problem. The furnace squeals when turned on and it seems to be...

The combustion blower is easy to replace. You may be able to prolong the life of the motor by applying lubrication to the shaft bearings. If the motor is too far gone then replacing it is the only option. Just remove the screws that mount the blower case to the heater, disconnect the wires and reverse the steps to install a new motor.

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why did the wiring burn?Id have the heat exchanger inspected before rewiring.better to be safe.

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