Hi, I have just moved into a new home and have found a problem with central heating system. The house has been extended since the boiler was last fitted but the radiators in the extension get lukewarm at best, one gets no heat at all and even the lukewarm ones take a very long time to heat up. The boiler is getting towards the end of its life ( it was fitted in 06 ) Was thinking that the issue may be the boiler is not powerful enough to heat the house? I have turned all radiators apart from the extension ones and they do get warmer but not as hot as they should. do you think that a new more powerful boiler should fix this or could there be something else going on? cheers for any help!