House Water Pumps

chris020 · 20 Jan 2018 at 12:37

We would like an unvented cylinder but I am afraid the cold feed is not 22mm so looking to replace existing tank with a std tank and install a whole house pump as the hot water pressure is poor.

Anyone have any experience of these pumps and if so are they reasonably quiet?

Thanks

HardwareGeek · 20 Jan 2018 at 15:43

Check your flow and pressure, i only have a 15mm cold main but still had enough pressure and flow for an unvented cylinder

dont know much about pumps but they are very noisy

chris020 · 20 Jan 2018 at 17:35

HardwareGeek said:
Check your flow and pressure, i only have a 15mm cold main but still had enough pressure and flow for an unvented cylinder

dont know much about pumps but they are very noisy

Many thanks, I'll get the plumber on the case.

img · 20 Jan 2018 at 18:06

I have a pump on the house and it' like a jet taking off

chris020 · 20 Jan 2018 at 22:21

img said:
I have a pump on the house and it' like a jet taking off

That is a pain, would not work here as the shift worker in the house would wake everyone else. What sort of pump do you have?

robj20 · 21 Jan 2018 at 07:54

If it's anything but a hum it's fitted poorly.

chris020 · 22 Jan 2018 at 11:34

robj20 said:
If it's anything but a hum it's fitted poorly.

Makes sense, also been talking to one of the pump providers that make, apparently, a really quiet pump. I'll feedback when all the work is completed.

Jez · 22 Jan 2018 at 13:50

chris020 said:
Many thanks, I'll get the plumber on the case.

Definitely get someone to check out your options, we have an unvented cylinder on a 15mm feed and it performs wonderfully. Some of the best money i have ever spent.

peterwalkley · 22 Jan 2018 at 19:12

robj20 said:
If it's anything but a hum it's fitted poorly.

This !!!!!!

We have a pump fitted but only need it for showers so just switch it on for that. First one died after 6 or 7 years, but the identical replacement was fitted by a much more competent plumber. We didn't realise that the first was wrongly fitted until the second guy showed us all the rubber stand offs after we asked whether it was running ok. The difference in noise level was night and day.

panthro · 23 Jan 2018 at 14:03

I bought a Salamander 3 Bar shower pump to power the extension we built (1 shower, 2 sinks, 1 bath, 2 toilets and a utility room) as a stopgap for when we install an un-vented cylinder. It doesn't matter about the pressure or size of the inlet, what's important is the flow of litres per minute. The pump works well but is a little noisy.

chris020 · 24 Jan 2018 at 12:38

panthro said:
I bought a Salamander 3 Bar shower pump to power the extension we built (1 shower, 2 sinks, 1 bath, 2 toilets and a utility room) as a stopgap for when we install an un-vented cylinder. It doesn't matter about the pressure or size of the inlet, what's important is the flow of litres per minute. The pump works well but is a little noisy.

Can I ask where you put the pump and what sort of surface its on?

chris020 · 24 Jan 2018 at 12:41

peterwalkley said:
This !!!!!!

We have a pump fitted but only need it for showers so just switch it on for that. First one died after 6 or 7 years, but the identical replacement was fitted by a much more competent plumber. We didn't realise that the first was wrongly fitted until the second guy showed us all the rubber stand offs after we asked whether it was running ok. The difference in noise level was night and day.

Interesting as our exiting shower pump makes a hell of racket as well.

task · 24 Jan 2018 at 13:06

We fitted a shower pump, does two showers with no issues, fitted on a shelf in the boiler room. You can't hear the pump over the sound of the shower water despite it being on the adjoining wall.

chris020 · 24 Jan 2018 at 13:14

task said:
We fitted a shower pump, does two showers with no issues, fitted on a shelf in the boiler room. You can't hear the pump over the sound of the shower water despite it being on the adjoining wall.

Wow looks like a hefty bit of kit, is it a whole house pump and what type is it?

task · 24 Jan 2018 at 14:03

chris020 said:
Wow looks like a hefty bit of kit, is it a whole house pump and what type is it?

It looks bigger in that photo than it actually is, the shelf is around the size of a piece of A4. That pump runs two thermostatic mixer showers, the hot taps are un-pumped and the cold taps are mains pressure. It's a 2.0 bar Salamander pump but they no longer sell this model.

panthro · 24 Jan 2018 at 14:20

chris020 said:
Can I ask where you put the pump and what sort of surface its on?

In the loft, above the hot water tank. It pulls the hot water up and redistributes it across the house, but because it pulls the water up we had to buy a pump with a negative pressure head. It's on a block of wood, with an off-cut of carpet on top. No vibrations as such, but you can hear it running. Doesn't bother me much though. This is the pump:

https://www.salamanderpumps.co.uk/product/ct-force-30-tu/25

chris020 · 26 Jan 2018 at 14:00

Thinking more positive about pumps now as the pressure for unvented tank is too low.

Many thanks all