can someone please help, not sure what sort of boiler I have, but do not have airing cupboard or tank in loft, run on gas.. All the radiators in the house work except for one at the top of the house, which is 3 storeys, the other radiator on the same floor is fine, I would bleed it but cannot seem to find the necessary valve, have found it on all the old radiators but not on this new one Help!!! My son is presently going to bed in tacksuit top and bottoms, plus socks,hat and 3 duvets..