I have a twenty year old Barlo Balmoral 45F wall mounted fanned balanced flue boiler boiler. As I am now building an extention to the house, I need to extend/redirect the (rectangular shaped) balanced flue by about a metre. I have been told this is not possible and that I need a new boiler and because of new building regulations this is going to cost me in the region of Â£2,500. Why is this so expensive and if this is the case could I do some of the work like fitting the TRV's and programmable room thermostat myself.
Well in that case yes it is very expensive. If you say Â£1500 for boiler, pipe and fittings (which is over priced the real price is probably Â£1000) then they're making Â£1000 profit for half a day's work
If it is what you say, and it's basically a boiler swap then I would say Â£1500 would be a fair price. Get some more quotes.