Help with central air conditioning unit making a loud noise?

T

tonrob1

New member
My central air unit has started making this loud noise when it comes on. The fan will barely turn. Sometimes the fan will catch "and" start turning, then the noise goes away. The air coming out is nice and cool. Other times, the fan spins slowly, then stops all together, and the noise goes away, with no air. We've stopped turning it on...any ideas on what it could be and how much to fix it?
 
there is a capacitor inside the outside unit,one half of the capacitor controls the fan and the other half is for the compresor.now if your fan motor is going bad it will do the same thing.it's probably an old unit.if it's a grunting sound when it comes on then thats usually the compressor.the freon may be turning to liquid when it should be vapor which means the valves in the compressor are going out .now you can try one thing andit's no garrentee and that's to have someone come out and completely evacuate all the freon out of the system and hook up a vacuum pump to pull the system down into a vacuum and put fresh freon in it.you can call an heating /air conditioning co. to give you an estimate on what it will cost to do it of if it's a real old unit get a estimate on replacing it.everything is going to 13 seer and 10 seers are being weeded out,eventually your going to have to go that route because you won't be able to get r22 anymore,it will be r410a ,just like they did with the r12 years ago.thats about all i can tell you,i know it's not all good news but i hope it will help
 
There is a blower motor and capacitor going bad. It would be 450 dollars to remove the assembly, replace the motor and cap, clean the fan blades and test it.
 
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