Basically , combi boiler , 8 radiators in total in the house , all other
radiators are fine , except one , it works fine , but over say a month it
tends to end up full of air ? so i use the key to open the valve and let the
air out , usually quite a lot and then its fine for say 4 weeks ?!!? the
rest are perfect , this radiator in question is on the same floor as the
combi boiler and is perhaps only 3 meters away , but why only 1 radiator out
of all of them have this problem ?