humming noise at heat pump

Problems related to residential installations.

humming noise at heat pump

Postby Rodger » Sun Oct 23, 2011 2:54 am

I have a humming noise at my heat pump when the heat pump isn't running.

Is this normal or do I have a problem?

I thank you for any info on this matter
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Joined: Sun Oct 23, 2011 2:43 am

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