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Goodman CK42-1C Need a new Capasitor. What size? 440 40/5 or 370?

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The rating should be on the capacitor, for instance 40/5-440 means you have a 40 microfarad capacitor for the compressor and a 5 mirofarad capacitor for the fan motor and it's rated for rated for 440 volts.
The capacitor should be whatever the compressor and fan calls for, but in a emergency you can use anything within + or - 10% on the microfarads but the voltage should be the same or higher than what's called for, until you can get the proper capacitor.
The higher the volts the better the insulation value of the capacitor, so you can always go to a higher voltage rating.
If you can't read the specs on the capacitor then look on the compressor and fan for the ratings. If they're not there then take the model number of the compressor and fan to the parts house and they can look it up for you.

Posted on Aug 31, 2010


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