STANDISH, ME - SEPTEMBER 25: Aaron Sinclair, of Dave's World, installs a heat pump at the home of Roland and Dale Bois on September 25, 2018. Sinclair, who has worked installing heat pumps for two ...

A trial giving heating engineers a free heat pump for their own homes is to be rolled out to thousands of people after it boosted professional support for the tech. The “start at home” pilot by ...