We have a flat that was built mid-90s. The cold water tank sits above the hwc in the airing cupboard so there isnt a huge amount of gravity but we never had a problem with hot water flow until we changed our taps. The kitchen has a mixer tap, bathroom 1 sink has a mixer tap, and bathroom 2 sink has 2 individual taps. We changed the 2 mixer taps and since then the hot water flow to them is just a dribble. When the cold is added the hot doesnt even flow. The plumber said this is because taps these days are small bore so the bore isnt wide enough to deal with the lower pressure of our system. We asked him before we bought the taps if we should bear anything in mind when choosing taps but he said 'no any taps will be fine'. That plumber is no longer around so we got another plumber in to ask how we can fix this problem. He says we need a direct unvented cylinder so the hot water also flows at near mains pressure. This will cost us several hundred pounds. We asked him 'can you not just fit different taps that work like the old ones used to?' He says no because modern mixer taps are small bore and even a low-pressure half bar mixer wouldnt be up to the job as our hw pressure is so low. We point out that a) the old mixer taps worked fine before, so our hw pressure cant be that low, and b) the hot water single tap in the other bathroom and the bath itself still work fine. He is insistent that there is no mixer tap available that will run hot water through it like the old ones did.
Please advise. He seems like a nice guy, weve used him for other work and hes good at his job and reliable, but what he is saying doesnt make sense to us.
Please advise. He seems like a nice guy, weve used him for other work and hes good at his job and reliable, but what he is saying doesnt make sense to us.
