Skip to main content

Ready to hire?

Post your job in minutes, browse real reviews and choose who to speak to.Post a job

Need some tips or advice?

Ask a question
Plumbing

Best water system for low mains pressure

Anonymous user 28/02/2024 - 3.45 PM

Hi, I've tested my water pressure at the mains and it's not great, possibly less than 2 bar. It's a four bedroom house with one main bathroom and an en-suite shower room. What water system is best in terms of good hot water pressure at the showers and also cost to run? We currently have a gravity-fed system with a water boiler in the garage and a vented cylinder in a cupboard on the landing. I've read that an unvented system wouldn't be good due to the low water pressure - shall I just stick with what I've got and invest in a couple of pumps?

Are you a tradesperson and able to answer this question?

Log in

3 Answers

D & R Property and Plumbing Maintenance

Rating: 4.9 out of 5
New Romney
2 bar not great,but better than some,waterboard have to supply at min .7 of a bar,with low pressure an unvented cylinder is not a good option nor is a combi boiler,this leaves you with tanks and vented cylinder,a whole house pump would be your best option.
Answered4 September 2019
6

Witon Builders Ltd

Rating: 5 out of 5
Chigwell
It's probably worth considering expansion vessel tanks as well if you didn't want the pump running every time you use the water.
Answered6 September 2019
0

ABS Plumbing

Rating: 5 out of 5
Mansfield
Water pressure and flow rate are different things. You can have 2 bar static pressure but a good flow rate i.e. the volume of water delivered at the taps is fine. Conversely a static 3 bar might deliver a lower flow rate than yours. A weir gauge is used to measure the flow rate. If you determine that you have a good flow rate either a combi boiler or an unvented tank will deliver good volumes of hot water. If your flow rate is poor your existing tank fed system with the addition of a whole house pump to supply taps and showers is the best answer and is considerably cheaper than the combi or unvented tank.
Answered6 September 2019
0