Anyone know much about shower/whole house pumps?

[fiju]

I have a gravity fed water system in my house. The cold water tank is in the loft, and the hot water tank is below it in an airing cupboard. Cold water pressure is excellent, butI've always suffered from low hot water pressure. No idea why.

About 15 years ago a salamander pump was put in to help the hot water around the whole house. It worked well.
Then about 5 years ago some cretins redid the bathroom, broke the salamander, and replaced it with a wickes pump. In the process, they changed the routing of the pump pipework to only supply the shower. So shower pressure is excellent, but the rest of the house is crap.

Recently this has pump has died. I'd like to replace it with a new one but I'd like to change the pipework so it does the whole house again. Where do I start?

I'm considering one of these two pumps:

https://www.screwfix.com/p/salamander-pumps-ct-for...

https://www.screwfix.com/p/grundfos-96788173-regen...

Edited by fiju on Saturday 17th August 14:16

[fiju]

Gingerbread Man said:

Could your showers cold be mains fed rather than gravity?

Another option to ponder over is making your hot water mains pressure too, so no need for a pump, no noise from a pump.

Yes I think the shower may be mains fed, including all the other taps. How do I make sure?

That sounds like a brilliant idea. How do I do that?

[fiju]

Ok I'm pretty sure the cylinder is fed by mains water. An old looking pipe (victorian perhaps?) comes up to the cylinder, where it steps down slightly and works its way around to the inlet. The valve is fully open. But that doesn't explain the cold water storage tank in the loft... So now I'm not so sure.

Edited by fiju on Saturday 17th August 15:26

Edited by fiju on Saturday 17th August 15:27

[fiju]

snowandrocks said:

They've just had one of these put in and have been raving about it - self contained unit that continually monitors the system pressure and varies the pump speed accordingly. Almost silent apparently and allowed them to do away with the pressure vessel etc. About £300 I think.

https://www.dabpumps.com/en/products/multistage-ce...

Omg that vid

Thanks for the suggestions guys. I've been thinking about it and have come to the conclusion that I may be better off fitting a non vented cylinder. If that's the case then I'd like to move it from the airing cupboard to the loft. My only concern is if my loft will be able to take the weight? Probably looking at a 250l-300l cylinder.