wonder if anybody can help,, i have moved to old house , hot water tank is in room upstairs,,every so often no water comes out the hot water taps as if something like an air lock stopping it.... i have a mixer shower but i dont think thats anything to do wit it,,,its just been added to pipes in toilet,,,,cold water is great all the time .... the hot does this every 2 to 3 weeks latley ... then you have to muck about with it to get water back again...........any ides at all would bbe grateful....i think system has the radiators on it to........
