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Question:

Blower motor in Home AC unit grinds to a halt.?

I let it rest for a while and it runs again for several min. but slowly grinds to a stop again. Sounds like bad motor. Capacitor is fairly new. I cleaned off the dust that was caked on and put the motor back in. It ran all night but did the same in the morning. What causes this you think? Also where do I buy a blower motor? And lastly, do I need to be licensed to buy AC parts?

Answer:

Sounds like the bearing{s} are shot. Unless you have a puller and are fairly handy it would be advisable to purchase a new motor; they are not that expensive. Pull the motor and get the specs frame type, hp, model and serial # or just take the motor with you to a parts supply house. And no……… you don’t need to be licensed to purchase parts; only for refrigerant.
in case you have chilly air trickling out of the vents, that's an illustration of a frozen evaporator. The evap clogs with ice which prevents multiple the air from getting by way of it and by way of the vents. What air does get by way of is amazingly chilly. The air handler is the place your blower is. that's interior the storage or the attic. you will could desire to make a service call to have somebody examine the refrigerant point. additionally, the exterior unit. sturdy luck
You could try oiling it. The HVAC industry uses Zoomspout oil for motors. Zoomspout oil is a high temp resistant non flamable oil that is specially formulated for sleeve bearing type motors. Buy it at any Ace hardware for $2. You can easily purchase a motor at any HVAC or appliance parts store. It is better to buy a motor based on amp draw than HP rating. Most parts stores will be glad to assist you in getting the rotation right, etc. The typical 1/3rd hp motor will run around $100 bucks. A good product to have is rust buster. A little on the screws will really help out.

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