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Boost Your Electric Shower Pressure
The Shower Power Booster is a simple way to improve an existing electric shower when low or fluctuating mains pressure causes poor flow. Shower Power Boosters stop temperature changes or nuisance cut-outs.
Is This the Right Solution for Your Shower?
An electric shower heats mains cold water as it passes through the unit. If the incoming pressure drops, the shower can lose flow, change temperature or activate its low-pressure protection.
A Shower Power Booster fitted before the electric shower maintains the incoming water supply even when other outlets in the home are being used.
The flow improves to the maximum output of your shower.
- ✓Your electric shower loses pressure when taps or toilets are used
- ✓The shower sometimes runs cold or cuts out
- ✓Your mains pressure varies during the day
- ✓You want to improve an existing shower rather than replace it
How Does It Work?
Fit the pump on the mains cold feed before the electric shower to boost and protect the incoming supply.
Boost Your Existing Electric Shower
When a toilet is flushed or another tap is opened, the pressure reaching an electric shower can fall. This can cause the shower to become very hot, run cold, or switch off.
Installing a Shower Power Booster before the shower helps maintain the water supply and reduces these fluctuations.
For most installations a single SP2B is enough. Where incoming mains pressure is particularly low, a double boost arrangement may be more suitable.
Your Shower's kW Rating Still Matters
An electric shower can only heat a certain amount of water. Its kW rating determines the flow it can comfortably heat to showering temperature.
The pump can improve the incoming supply, but it cannot make the electric shower heat more water than the unit itself is designed to handle.
Performance can also feel poorer in winter because the incoming mains water is colder and the shower has to work harder to heat it.
Designed for Electric Shower Problems
A compact way to improve and protect the water supply to an existing electric shower.
Maintain
Helps maintain a more consistent supply when another tap or toilet is used.
Boost
Improve low incoming flow up to the practical limit of the electric shower.
Prevent
Helps keep pressure above the shower's low-pressure protection threshold.
Easy
Compact inline installation wherever the pipework is most convenient.
Safe
The pump runs on 12V DC, with the transformer connected away from the pump.
Is Your Electric Shower Cutting Out?
Electric showers are designed to cut out when incoming pressure falls below roughly 0.8 Bar. In most UK homes this happens dozens of times a day - a flushing toilet, a tap opening, a washing machine filling, a combi boiler firing for hot water elsewhere.
A Shower Power Booster fitted before the electric shower on the cold mains adds up to 0.6 Bar of sustained pressure (single SP2B) or up to 1.2 Bar (double SP21S). That should keep you comfortably above the cut-off, even when the whole house is using water.
Boost Your Electric Shower
Improve low or fluctuating water pressure with a Shower Power Booster designed for electric shower systems.
What Customers Say
Reviews from customers using Shower Power Booster with electric showers.
Delivered really quickly. Easy to follow instructions make installation easy too. Fitted to cold water feed for house and has increased pressure and electric shower works well and other taps benefit from this as well. Would buy again.
Helpful advice, prompt dispatch and delivery. I am DIY capable and found instruction and fitting straight forward. End result is a much improved electric shower water pressure. Would recommend fitting it as a solution to low shower water pressure.
Does what it says on the box, works great on low pressure feeds to electric showers, easy to install. Compact tiny little pump with great results.
Electric Shower FAQs
Straightforward answers to common questions about boosting an electric shower.
Where can I fit the pump to boost my shower?
Fit the pump into the water pipe wherever it is convenient and suitable for the installation. The low-voltage cable allows the transformer to be positioned away from the pump and connected to a normal socket.
My shower stops when someone flushes a toilet. Will SPB help?
That symptom is commonly caused by the incoming water pressure falling when another outlet is used. A Shower Power Booster installed before the electric shower helps maintain and protect that supply.
Why does 12V DC matter near an electric shower?
The Shower Power Booster pump itself runs on a low-voltage 12V DC supply. This makes it much more flexible to position than a conventional mains-powered shower pump. The transformer remains connected to a suitable mains supply away from the pump and out of a bathroom if necessary.
Will a bigger pump give me unlimited flow?
No. The electric shower heating capacity still limits how much water it can heat to the required temperature. The aim is to give the shower a stronger and more stable incoming supply, not to exceed the shower manufacturer operating limits.
Not Sure Which Pump Your Electric Shower Needs?
Answer a few simple questions and we will help you narrow down the most suitable Shower Power Booster.