QuoteRetrofitting every house in the UK to net zero standard by 2050 will require replacing all gas boilers, mostly with heat pumps. The target rate is 600,000 a year by 2028 – but in 2022, fewer than 60,000 heat pumps were installed.

As the government prevaricates over asking manufacturers to make more heat pumps, debate rages over whether they are a wise replacement. A recent article in The Times, for example, claimed that heat pumps do not work in cold Scottish winters.

In fact, heat pumps have been tried and tested around the world. Apprehension about them in the UK is down to the fact that most people are unfamiliar with them.