Low Hot Water Pressure on New Bathroom

[Lenovo]

Hi,

I have had a new bathroom installed and the hot water pressure is low.

We have mains fed cold water into a immersion heater and hot water comes from their. Cold water is fed from the mains. Our bathroom has a electric shower.

It is a immersion heater with a header tank.

What pump would you recommend to increase the hot water to our taps in the bathroom?

 

[glenno1]

Have they installed flexi connectors on the taps

 

[Best]

When you say "immersion heater", do you mean a large hot water cylinder?

 

[Lenovo]

yes a large hot water cylinder

 

[Lenovo]

yes flexi connectors are installed to the taps. Cold water pressure is fine, it is just the hot that has very little pressure

 

[Koogatubac]

- Are the flexi's kinked?
- could be airlocked

 

[Best]

It the hot water cylinder is unvented - mains fed, as you describe, then you don't put a shower pump on it!
As the mains pressure is good, then your hot should be similar flow - unless you have a cold water tank gravity system?

 

[Phil]

Sounds like you've bought high pressure rated taps and your plumber didn't warn you beforehand??

You have a low pressure gravity hot water system so your choice of taps is limited to the low pressure variaty.

 

[Lenovo]

- Are the flexi's kinked?
- could be airlocked

Have checked the flexi's they appear to be fine.

How do I know if it is airlocked, our old bathroom taps have pressure it's just the new bathroom on the other side of our house.

It the hot water cylinder is unvented - mains fed, as you describe, then you don't put a shower pump on it!
As the mains pressure is good, then your hot should be similar flow - unless you have a cold water tank gravity system?

Yea the hot water cylinder is mains. Has cold at the top and hot at the bottom

Sounds like you've bought high pressure rated taps and your plumber didn't warn you beforehand??

You have a low pressure gravity hot water system so your choice of taps is limited to the low pressure variaty.

Plumber didn't warn about the taps needing high pressure. Would a pump be able to solve this issue?

 

[glenno1]

Are you getting pressure and flow mixed up and you have had flow reduced because the flexi pipe bore is smaller

 

[Lenovo]

Water from cold shoots outs where as the hot water trickles out would take forever to fill a sink, heaven forbid a bath.

 

[Phil]

Can you post a link of better still take a pic of the taps? my bet is they are restrictive high pressure kind.

 

[plumber0808]

Speak to the installer about the problem we can speculate about issues but It might be easily solved.

a good installer will return to a job if its not working correctly.

 

[Lenovo]

Thanks for the replies, you are so helpful:

Buy Escala Bath Mixer in Escala Bathroom Tap Range at MFI and Buy Escala Basin Mixer in Escala Bathroom Tap Range at MFI

 

[glenno1]

Are they mixer taps

 

[Lenovo]

Are they mixer taps

Yes they are

 

[plumber0808]

If there on a low pressure system, they are now useless.

they are not the best on high pressure, On low they dribble out.

 

[Lenovo]

If there on a low pressure system, they are now useless.

they are not the best on high pressure, On low they dribble out.

Thanks for that. So a pump will not help?

 

[plumber0808]

You would be solving a problem with another problem by fitting a pump onto taps.

Taps with the correct minimum pressure rating should of been fitted.

 

[glenno1]

NB. All Victoria Plumb taps are compatible with the following systems: Gravity fed, pumped, unvented high pressure or fully modulated combi boilers. On the advert it says they are suitable for all systems so get onto victoria plumb

 

[Lenovo]

Thanks for the replys you have been so helpful. I've contacted Victoria Plumb about the taps and will let you know what they say. However how will solving a problem with a pump cause another problem?

 

[Crinkmeister]

You don't need to go to the expense of installing and running a pump -you just need a tap that is designed to work on a low pressure (ie gravity fed from your cwc in the loft) system.

 

[Koogatubac]

Go to your mixer and do this to release air locks:

- place hand firmly over spout
- open HOT TAP then slowly open cold
- (this will push the cold through the hot pipework and push the air out)
- move your hand and close the cold tap asap
- see if the flow increases and notice any air within the water

 

[Phil]

Go to your mixer and do this to release air locks:

- place hand firmly over spout
- open HOT TAP then slowly open cold
- (this will push the cold through the hot pipework and push the air out)
- move your hand and close the cold tap asap
- see if the flow increases and notice any air within the water

Not easily done with waterfall taps though, last lot I fitted I was up against a 50 minute bath fill up on 3 bar mains hot and cold. Nasty things, I found myself taking them apart and removing the restrictor to get a better flow rate.

 

[jam1979]

if your hwsc is a forctic your head of pressure could be non existant and there for may consider a cwsc in the loft and another cylinder