with the recent rise in gas prices and the possibility of further increases i am after tips as to how to run a combi boiler with greatest efficiency. I have a large 3 bed semi with cavity walls eight rads 6 with trv's. the ones without are in the bathroom and kitchen. the boiler is a chaffoteux et maury mx2. i have recently fitted a programmable stat in the hall near the kitchen. the main question really is what to set the water and heating temperature to on the front of the boiler. i have read on one website that for max efficiency set both to max. is this correct?
Paul.