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by throw0101a
1943 days ago
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> There are quirks - the COP is different for lower temperatures, and becomes 1:1 at around 5F (-15C). It depends on the unit. Some (Mitsubishi FE12NA) have a COP of 1.75 even at -10F / -20C. See Table 6: * https://www.nrel.gov/docs/fy11osti/52175.pdf |
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check chart on: https://www.researchgate.net/figure/Coefficient-of-performan...