Heat pumps twice as efficient as fossil fuel systems in cold weather, study finds
Heat pumps twice as efficient as fossil fuel systems in cold weather, study finds
https://www.theguardian.com/environment/2023/sep/11/heat-pumps-twice-as-efficient-as-fossil-fuel-systems-in-cold-weather-study-finds
Doubts about whether heat pumps work well in subzero conditions shown to be unfounded, say researchers