While the heating appliance may come with an efficiency rating as high as 95%, when pump energy, pipe and boiler jacket
losses, and boiler settings are factored in, the overall system efficiency could be significantly less.
These measures will cost you pounds 20, but the boiler jacket
alone could save pounds 40 a year.
And if every couple fitted a boiler jacket
, a total of pounds 340,000 would be saved.
If everyone in the North-East fitted a boiler jacket
, we'd save pounds 1m a year or enough energy to make more than a billion cups of coffee.
Engineering student David Welch, aged 20, and three friends had dressed for the Aston University ball in Birmingham in bright orange boiler jackets
with headgear that had eye and mouth holes cut in to make it look as though they were wearing balaclavas.