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Boost Showers and Taps from a Combi Boiler
Yes, you can fit a shower pump before and/or after a combi boiler. Improve weak showers and slow-running taps with a Shower Power Booster. Boost the supply before your combi boiler, or after the combi to protect the flow to an individual shower or tap. Or multiple showers after the combi.
How to Boost Showers or Taps from a Combi Boiler
Watch how a Shower Power Booster increases the water pressure in a shower fed by a combi boiler, and keeps it steady when another tap runs.
How Does It Work?
There are two main ways to use a Shower Power Booster with a combi boiler. The right installation depends on whether you want to improve the whole supply or protect a particular shower or tap.
Boost the Whole House
We recommend a SP21S double boost on the incoming cold-water supply, before the combi boiler.
This increases the pressure and flow available to the boiler and can improve the performance of a shower or tap throughout the home.
This also prevents low incoming mains pressure causing the boiler to stop heating the water.
WRAS approved and legal to fit to your incoming mains.
Protect an Individual Shower or Tap or Multiple Showers and Taps
An SP2B can be fitted on the hot-water supply after the combi boiler to boost a particular shower or tap.
This helps maintain pressure and flow to the chosen outlet when another tap or appliance elsewhere in the property uses water.
For multiple showers use multiple pumps.
Boost Your Combi Boiler System
Improve low or fluctuating water pressure and get better performance from your combination boiler system.
A Flexible Way to Improve Your Combi Boiler System
Boost the incoming supply to the boiler or improve an individual shower or tap without replacing your existing plumbing system. Shower Power Boosters give you power showers suitable for combi boilers.
Boost the Whole House
Increase the pressure available to the boiler and the hot-water outlets it supplies.
Ideal for Combi Boilers
Designed to solve pressure and flow problems associated with mains-fed combination boiler systems.
Fit Before or After
Choose the pump position according to where pressure and flow need improving.
No Electrician Needed
The pumps operate at 12V using a transformer that plugs into a normal socket.
Low Energy Use
Compact, efficient pumps designed to provide additional pressure without a large traditional booster pump.
Is Your Combi Boiler Cutting Out?
A combi boiler needs sufficient incoming water pressure and flow to operate correctly.
If the incoming cold-water pressure drops below the boiler's operating requirement, the boiler may stop heating the water.
Where low incoming pressure is the problem, an SP21S fitted before the boiler can increase the pressure and flow available to it.
Combination boilers may stop heating the water when incoming mains pressure falls below approximately this level.
Combination Boiler Installation Instructions
See the complete installation guide for pump positions, combination boiler applications and fitting instructions.
What Our Customers Say
Reviews from customers who've fitted a Shower Power Booster to a combi boiler system.
We had a loft extension and a Mira Digital Activate shower was installed to the en suite. With the combi boiler on the ground floor the shower would cut out mid use!Two SP22S boosters fitted to the hot and cold feeds after the boiler and yes the shower no longer cuts out. Very pleased and the shower is working top notch As a bathroom installer I find these booster pumps a huge benefit highly recommended.
In my 2nd floor flat with combi boiler, I swapped my electric shower for a thermostatic one with cold feed with only just adequate pressure and hot feet from the boiler. Had the SP22S installed (one pump on each feed right before shower valve). Very quiet, quick to kick in and has boosted the output of the 300mm rain shower head very well. Quick to ship. Great service.
An excellent piece of equipment, made a huge difference to the water flow of my combi boiler fed shower. Very easy to install.