My total gas bill las year including a gas hob and occasional use of a gas fire was £560. Let’s say £400 for the hot water and heating,.
If a new boiler saves me 25% of the hot water/heating costs then that £100 a year.
If the nesw boiler cost £3,500 then I recover the cost in 35 years. I reckon I’ll keep the old one until it fails.
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