Electric/mixer taps shower

jo101_2

HI

We have an electric shower which uses water that is heated by the shower and not from the tank so I presume that this is costly to run- would I be correct in that assumption? and so I was thinking that it would be better to get one of those shower attachments that fit onto that taps and shower from that as we always have loads of water in the tank at the end of the day ( we have ecomony 7 so the water is heated up at night and stored during the day for use) the thing is that the pressure on the cold tap is good and the pressure on the hot tap is fairly weak so would a mixer attachemnt work with this? or would the pressure from the cold not enable the hot water to get through properly? I hope this makes sense!!!

Many thanks

Jo

HugoSP

One option you have is to go with the arrangement you suggest but fit a 1.5 bar pump.

You would need both your hot and cold water to be fed from a header tank. I suspect your cold comes directly from a rising main or a different tank than your feed for your hot water tank.

The cost of doing this your self including the pump would probably run into a couple of hundred quid.

moneysavingplumber

The above may not be possible if the cold is direct mains and the hot is tank-fed, which is likely if there is a major difference in pressure. The best solution in such a situation is something like the Trevi Boost which uses a principle whereby low-pressure hot water is assisted by the mains pressure cold, although this wouldn't be cheap to buy and install to an existing installation. If you wish to fit a bath shower mixer and the cold is from the mains then you will have to fit a pressure reducing valve to the cold supply to the bath as well as a double-check valve.