Recent content by hc

Being an utter novice thanks for any help on this. Have inspected the loft more closely, yes it is a gravity feed to the hot water cylinder. There are no motorised valves. By this do you mean out of the radiators eg through a bleed valve? How would this help the intermittent cold instead...

Help! Sometimes we cannot get hot water, although we still have GCH. We have a gas boiler in the kitchen, and a hot water cylinder in the loft. We can select HW only, or HW and CH. The problem seems to be triggered by running a bath.... so is it an air-lock issue? The boiler fires up, CH is...