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A comment on Renewables became the second-most prevalent U.S. electricity source in 2020. Parent comment

Re:Renewables became the second-most prevalent U.S. electric... by erik_seaberg on Thursday July 29, 2021 @04:32AM (#27994202)
A heat pump needs a reversing valve, and goes through a cycle that defrosts the outside coils. A cheap air conditioner might not have those.
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