I would be grateful if anybody could offer advice on the following matter. We own a 2 bed flat which has electricity only. The water is heated by a pulsacoil 3 which has caused endless problems. We have decided to have it replaced but the quote we have received is to have an unvented cylinger fitted which needs a 22mm pressure release pipe running from the airing cupboard through the bedroom to the outside wall. I really don't want to have this fitted, neither do I want another pulsacoil because of all the problems. Are there other alternatives. I wondered whether a vented cylinder and a pump for the shower would work? The flat is rented out so all repairs/quotes etc are arranged through the managing agent. Any advise would be very much appriciated.