CelloMomOnCars OP , 25 days ago @gsymon Heat pumps are wonderfully efficient! The technology has improved a lot: newer air to air heat pumps work down to –15F (which is –26C) where they have about 75-90% the efficiency that they do at 70F / 21C outside temp.
@gsymon
Heat pumps are wonderfully efficient!
The technology has improved a lot: newer air to air heat pumps work down to –15F (which is –26C) where they have about 75-90% the efficiency that they do at 70F / 21C outside temp.