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How efficient is your boiler ?
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How efficient is your boiler ?

Heating accounts for about 60 per cent of what you spend in a year on energy bills, so an efficient boiler makes a big difference. Modern boilers are more efficient for several reasons, but their main advantage is that they are all condensing boilers. All well-maintained boilers burn their fuel very efficiently, but they inevitably...

22nd January 201814th August 2019by