The Delta-T Efficiency Secret Every week across North East Lincolnshire, homeowners spend thousands of pounds upgrading to brand new, A-rated condensing boiler, expecting their gas bills to plummet. But when the winter rolls in, those massive promised savings rarely materialise. The harsh reality is that a modern boiler is only A-rated in the laboratory. Once … Continue reading Why Your “A-Rated” Condensing Boiler Is Wasting Gas