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A comment on US companies are producing heat pumps that work below -20F(-28C). Parent comment

Re:US companies are producing heat pumps that work below -20... by sigmar on Wednesday December 28, 2022 @10:38AM (#34162039)
I'm not an expert on the topic, but I imagine that a heat pump that can handle -20F is also much more energy efficient when the temp is 0F (in comparison to a heat pump that was rated only for -5F, operating at 0F).
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