Hi everyone, my girlfriends parents have a combi boiler, they have rad valves on all rads, I go in there at night and the place is always boiling, the boiler is on the go 24/7 they do not have a room stat, can anyone in PLAIN English explain why they need a room stat as I am blue in the teeth trying to explain to them they need one, and can you explain the savings on gas bills if stat fitted please
Regards
Steve
Regards
Steve