blimey, that was quick, i didnt expect any replies for hours!!!!!!!! :wink:
anyway many thanks for the guys who took the time to reply.
i think this quote covers the answer to my question in a nut shell. I'll fine a local heating engineer and ask them around for their advice.
Cheers
Nik
Let me first say hello to everyone as i'm new to this site (but now added to favourites).
The reason i came across this site in the first place is that i'm having a rear extension build and need advice on a new boiler/system choice. My original system (please excuse my plumbing ignorance) is a...