by eddie »
Sat May 05, 2007 10:33 am
I am in the process of doing an extention and when I've enquired at a plumbers merchant about a new combi boiler and what size BTU output I need ,what size rad's i need etc. for the new part, they've informed me that i need a heating engineer/ surveyor with his magic calculation book to work it all out. Things like type of walls,floors, amount of insulation in the home etc. all get considered.
I just thought it would be the volume of each space but apperently not