This whole power flush thing is nonsense if you have a system that has been sealed for many years and that has never caused any problems. Got a new boiler a year ago, installed by some very reasonably priced and reliable local brothers recommended to me by a friend (Winter Warmth, 0208-5732798). They said it was standard these days, causing space problems (and, with that extra expense) with a lot of boxed in piping, but that it was only really of benefit with new systems or systems that had been drained and refilled.
Urs Esser ● 4485d