baxi system 35/80 IE?

Hot water mode light want come on heats my water but not my rads

David
October 2013

extractor fan keeps cutting out and stops the boiler from turning on

pat mulligan
July 2009

Efficiency is a ratio expressed as a percentage of heat out divided by heat in.

I imagine your boiler will be between 90% and 95% efficient.

Efficiency figures for many boilers here...

http://www.homeheatingguide.co.uk/efficiency-tables.php

But unable to see your specific boiler in the lists.

Peccavi
March 2009