Where do you get it?
At present I have a backboiler in my chalet bungalow which is now coming up for 19 years old but is working AOK and is on a British Gas Service Contract.. Obviously it will not last for ever although currently there is no urgent need for replacement.
I have established that contrary to rubbish put out back boilers are not due to be "outlawed" but they are liable to be more expensive and less efficient than combination boilers. On the other hand I am limited in options for siting a combination boiler - limited roof space because of loft conversion, car port down side of this semi, positioning of windows and doors etc. I suspect that any saving from the lower cost and greater efficiency of a combination boiler will be offset by the higher installation cost incurred by having to reroute pipework, and the grief to be incurred by upsetting my wife who has planned and ordered her new kitchen siting a cupboard at one of the best possible locations in the kitchen!
Comments anyone?