aldo714 t1_j73sfx9 wrote on February 3, 2023 at 9:29 PM Reply to How is your heat pump holding up in this weather? by Vermontess “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).” Permalink 6
aldo714 t1_j73sfx9 wrote
Reply to How is your heat pump holding up in this weather? by Vermontess
“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).”