boiler

Plus, increased energy efficiency ought to cut carbon emissions from homes, especially if property owners switch away from gas or oil-fired boilers, for example.

"Wood hid his disappearance by stuffing a boiler suit full of clothing and using a pumpkin as a head," he said.

The home’s boiler was serviced in July this year, a flue was replaced, and it passed checks, the BBC understands.

A fireman first class, he worked next to the boilers that powered the World War I-era ship.

Housing associations also say too many of these homes have gas boilers, which don't fit their plans to be more environmentally friendly.