Recent content by sentosa

Hi, Is it the boiler or the system you are trying to empty? You probably only need to let some air in at the top of the system, open a radiator bleed valve and or a tap. Having said that i have never done it on a combi boiler but i don't see there is much difference. If you are re-filling it...

I need to know how far from the exterior ground an air brick for sub-floor ventilation of a suspended, insulated, concrete beam system should be??