Hi - My old boiler is probably running on borrowed time so I'd like some advice on which type to go for. At present we have 4 bedrooms, 1 main bathroom, 2 en-suite shower rooms, 1 cloakroom and 17no radiators. The existing boiler is a Powermax 185 which as far as I can see is a traditional boiler with a built in cylinder. The boiler is gas fed on and on the top floor of a 3-storey house in an airing cupboard (centrally based, not on an outside wall but the loft space is directly overhead) The current system has an F/E tank in the loft directly above. The current boiler runs out of hot water fairly quickly when showering, although it reheats quickly, so we'd like something that can cope a little better. A couple of people have suggested a combi but from what I'm reading I might be better with a standard heat only with a separate hot water cylinder. Any advice would be very helpful and thanks.