ShowerPowerBoosters are retrofit pumps designed to legally and effectively improve a poor performing electric shower. Depending on the KW power of your electric shower a SP2B or SP21S will stop a shower shutting down or running too hot because the mains pressure is too low or the pressure fluctuates when someone in your house (or your neighbour), turns a tap on.

A ShowerPowerBooster can legally boost the cold feed to an electric shower in full compliance with water bylaws and you need no permission to fit one. A shower power booster will always sort out a pressure problem with an electric shower but an electric shower can never deliver hot water at a rate faster than an electric shower can heat it.

Fitting a Shower Power Booster is simplicity itself, remove 110mm of pipe, insert the pump, tighten the compression joints, plug it in, enjoy. You can fit a shower power booster at any angle and at any position so you can fit it away from the electric shower out of sight or next to the electric shower hidden in a wall. We have solutions for all electric showers.

BOOSTING MAINS PRESSURE

Connecting a shower power booster to a mains supply is very easy and it will fit on existing pipe work. The pump is compact and needs no support, you can even fit one inside a wall cavity or under a floorboard. It can be close to or far away from the electric shower as long as its on the pipe that feeds the shower.

The maximum output of an electric shower is determined by its KW power rating and in winter because the cold water is colder then the output is less:-

7.5 KW Electric Shower 3.5 litres a minute – Single Boost SP2B should sort it.

9.8 KW Electric Shower 4.7 litres a minute – Double Boost SP21S should sort it

12.5 KW Electric Shower 6.0 litres a minute – Double Boost SP21S can sort it if problem is not severe.

If by turning the shower to cold you get more water to flow then its probably because the electric shower itself is turning down the water pressure. Simply adding pressure will cause the electric shower to reduce the pressure further to what you had before you fitted the pump.

If you do not get an increase in flow turning the shower from hot to cold, or especially if the shower is cutting out due to low pressure, then the Shower Power Booster could be the perfect solution. 15 minutes – job done – much better shower – and you have joined hundreds of other happy customers.

CONSIDER CHANGING TO A GRAVITY BOOSTED SHOWER
Electricity is a very expensive way to heat water so boosting your gravity shower with a shower power booster to boost your pressure can save lots of money if you have a gas boiler. For a family of 4 having 5 minute showers, switching from electric showers to gravity boosted showers then the change can pay for itself in under a year. Every home is different and some teenagers are in the shower for more than 5 minutes!!!

For those who like to see the calculations then they are as follows (cost per year for a family of 4):-

COST OF SHOWERS USING ELECTRICITY – £229.34
Water used for a 6 litre a minute shower for 5 minutes = 30 litres.
Cost of water is 30 litres at 0.1p a litre = 3p.
4 person household at 1 shower a day 365 days a year = 4x365x3p = £43.80.
For each shower:- Cost of electricity 12.2p per KW/HR so 12.5KW x 12.2p x (5/60) = 12.7p
4 person household at 1 shower a day 360 days a year = 4x360x12.7p = £185.54
TOTAL £229.34

COST OF SHOWRS USING A GRAVITY SHOWER (WATER HEATED BY GAS)
Water used for a 6 litre a minute shower for 5 minutes = 30 litres.
Cost of water is 30 litres at 0.1p a litre = 3p.
4 person household at 1 shower a day 365 days a year = 4x360x3p = £43.80.
For each shower:- Cost of gas 3.89p per KW/HR so 12.5KW x 3.89 x (5/60) = 4.1p
4 person household at 1 shower a day 360 days a year = 4x365x4.1p = £59.86
TOTAL £103.66

SAVING £125.68 per year

All of our pumps are WRAS approved and fully compliant with all Regulations.

It is legal to fit a ShowerPowerBooster on the cold mains feed to an electric shower – Click here to see an extract from the Regulations

Detailed drawings and instructions are in the booklet sent with the pumps but you can download  the online version of this guide using the orange link on this page.