building pressure to shower.

sitja

Hi guys, will the experts on here help me out, Have a mixer shower in ensuite an pressure is not great, without adding a pump would this in any way help........... If i brought the hot pipe up from the hot press to attic ran it along and dropped it down to supply the hot to mixer and also tee'in in to the cold in attic and feeding the cold to mixer. As it stands the ensuite is back to back with the hot press and basically a tee from the hot is fed horizontally across to mixer and same with cold supply so there aint really no head of water.

jeepers101

No that won't make any difference. You still have the same pressure either way, supplied by the tank in your attic.

Joey the lips

Without adding a pump. No

You can take out your shower and fit a T90 but its cheaper to well.....add a pump

sitja

so even if the head of water is supplied vertically down to the mixer it wont increase head, because even when i take the shower hose off the rail and lower it the pressure increases slightly.

sitja

Oh and joey im not adding a t90 now but im just wondering is there much difference in the price, by the time ya by the pump and fittings and extra labour that would incur of just fitting the pump.

jeepers101

sitja wrote: »

so even if the head of water is supplied vertically down to the mixer it wont increase head, because even when i take the shower hose off the rail and lower it the pressure increases slightly.

Yes it would increase slightly as you are increasing the distance between the tank and the shower head. Running your pipes vertical to feed the mixer is not increasing the distance between the tank and the shower.

With regards to the T90 and a pump, they both cost roughly the same amount but you will incur more cost with the t90 due to the large cable, which will need to be installed. It could be a whole days work for two men just running the cable (depending on the cable run).

The pump will give a far superior shower in terms of water pressure as well. Also you are in the advantageous position of having the hot and cold feed to the shower running through the hot press, which will make the installation easier.

Joey the lips

sitja wrote: »

so even if the head of water is supplied vertically down to the mixer it wont increase head, because even when i take the shower hose off the rail and lower it the pressure increases slightly.

The difference in a vertical head is not much worth talking about. The height of the vertical head is whats worth talking about. If you can increase that it will make a difference. However there is going to be a lot of plumbing involved in doing this. You will also have to reinsulate your tank as it will require better insulation for winter.


The difference in a pump and T90 is not much. Especially if you buy a good pump. Pump is about 300 T90 about 250. fitting works out about the same

sitja

thanks guys thought that, and t90 i assume would waste more electricity right? What way are pumps on the electric bill..?

Oh and what i meant by the vertical run was that if took them veritically up out of the hotpress ran them horizontally across the attic then drop them back down vertically to mixer but to much effort for minimal difference if any at all.

jeepers101

sitja wrote: »

thanks guys thought that, and t90 i assume would waste more electricity right? What way are pumps on the electric bill..?

Oh and what i meant by the vertical run was that if took them veritically up out of the hotpress ran them horizontally across the attic then drop them back down vertically to mixer but to much effort for minimal difference if any at all.

The t90 would take about 20 times more electricity to run than the pump. The pump would have a negligible effect on your ESB bill. This is because the pump needs to have hot water supplied to it from another source ie your cylinder. Heating your water with the central heating system will be more economical than the t90 but only if the system has good controls and the cylinder is well insulated. The t90 takes cold water and heats it instantaneously, so you won't need any hot water in the cylinder.

With regards to the vertical run, that would probably just hinder the water pressure due to the added restriction in the form of more pipework.

sitja

on the ball lads.

Joey the lips

Stats actually say a t90 while it uses electricity it is the most environmentally way to heat water as you are only heating what is required. It costs pence not pounds or makes cents not euros