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

Heat pumps are more than twice as efficient as fossil fuel heating systems in cold temperatures, research shows.

Even at temperatures approaching -30C, heat pumps outperform oil and gas heating systems, according to the research from Oxford University and the Regulatory Assistance Project thinktank.