Though heat pumps have not until recently been a very high-profile technology, they have become the subject of national conversation in the UK and in countries across the globe. Sceptics often claim that heat pumps are fine when the weather is mild but won’t perform efficiently when the temperature drops below freezing. Are they right?
We, at the Regulatory Assistance Project, have gone through virtual stacks of data on the real-world efficiency of air-source heat pumps across multiple countries and climatic regions to answer that question. Our new research, which draws on the best-available data, shows that, even at -10°C, heat pumps operate at more than twice the efficiency of gas and oil boilers.
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