Hi, I have a 4ton, 15 SEER heat pump installed and serviced by an authorized dealer heating and cooling 3000 sq.ft. It was installed last Feb. In early Dec. the expansion valve in the condensor went out. I had to wait two days for the dealer to get the part from the mfg. Yhe unit does not seem to work as efficently as before and my electric bill are 50 to 100% more.
Is this probable?
Thank you for your thoughts.
Problems related to residential installations.
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