In article , Set Square wrote:
Even Drivel didn't say you'd get a 40% saving on gas - he said *up to* 40% -
which is a bit different - and grossly optimistic at that unless you've got
a literally 'stone age' boiler.


The OP's description was "a fifteen year old rarely serviced (probably never
since new)" boiler so the new boiler may well save 40% on the present gas
usage. But servicing the existing boiler might produce a double-digit saving.

--
Tony Bryer SDA UK 'Software to build on' http://www.sda.co.uk
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