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aldo714 t1_j73sfx9 wrote

“At single-digit temperatures, the efficiency of heat pumps drops by almost half compared to 47°F temperature (HSPF rating, for example, is measured at 47°F).”

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kelvin_bot t1_j73sh1d wrote

47°F is equivalent to 8°C, which is 281K.

^(I'm a bot that converts temperature between two units humans can understand, then convert it to Kelvin for bots and physicists to understand)

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