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Boilers produce heat using various fuels including

Boilers produce heat using various fuels including natural gas or oil boilers are among the most popular heating systems due to their longevity and efficiency. Building regulations state that new boilers should have a minimum efficiency of 86 per cent for gas and 85 per cent for oil this means that a replacement boiler should usually be a condensing boiler, although exceptions can be made if this is not a.

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