We’re already pretty much there! https://www.energy.gov/eere/buildings/articles/doe-efforts-send-new-and-improved-cold-climate-heat-pumps-market https://www.en

We’re already pretty much there! https://www.energy.gov/eere/buildings/articles/doe-efforts-send-new-and-improved-cold-climate-heat-pumps-market https://www.energy.gov/eere/buildings/articles/doe-efforts-s... “Bosch, Carrier, Daikin, Johnson Controls, Lennox, Midea, Rheem, and Trane Technologies participated in the challenge. They successfully completed prototype testing at Oak Ridge National Laboratory and other facilities in 2022 and 2023, with some units operating at temperatures as low as –15°F (–26°C) while still meeting efficiency requirements. The companies then moved products into field testing in 23 residential sites located across 10 U.S. states and 2 Canadian provinces. In partnership with Pacific Northwest National Laboratory, each site gathered a full year of data. U.S. testing sites were in the Northeast, Midwest, and Mountain regions. In the field, the residential CCHPs reliably provided heat with little assistance from auxiliary elements, even during the coldest winter periods.”