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GR-98057222
Grundfos UP 20-45N Domestic Hot Water Service Pump Circulator - 230vGrundfos UP 20-45N Domestic Hot Water Service Pump Circulator, 230v. The UP 20-45N is a stainless steel fixed-speed circulating pump suitable for domestic hot-water systems. The UP 20-45N can be connected to an on/off time switch to save energy. The on/off time switch can switch the pump on/off to limit pump operation to periods when hot water is usually required.
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GR-98057221
Grundfos UP 20-30N Domestic Hot Water Service Pump Circulator - 230vThe UP 20-30N is a stainless steel fixed-speed circulating pump suitable for domestic hot-water systems. The UP 20-30N can be connected to an on/off time switch to save energy.
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GR-98057205
Grundfos UP 20-15N Domestic Hot Water Service Pump Circulator - 230vThe UP 20-15N is a stainless steel fixed-speed circulating pump suitable for domestic hot-water systems. The UP 20-15N can be connected to an on/off time switch to save energy. The on/off time switch can switch the pump on/off to limit pump operation to periods when hot water is usually required.
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GMT-5055-JET80-45/1
Trebles Booster Package Set - 24Ltr - 240vReplacement for the JP5 & JP6 Booster Sets. 24 litre booster package set using a Stuart Turner Jet 80-45 pump
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99164484
Grundfos UP 15-14 B PM 99164484 Comfort Hot Water Circulator Pump - 230v - Single PhaseUP15-14 B PM Comfort Hot Water Circulator Pump which is a driect replacement for the Grundfos BP15-13. There is no difference in performance between the 2 models.
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GR-MD450200
Grundfos Home Booster Packaged Pumping System - 230v - 4.5 Bar VersionThe Grundfos Home Booster is a self-contained cold water booster set is specifically designed to be used in properties where the existing mains water supply is insufficient to meet the standard pressurised hot and cold water system demands.
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96806803
Grundfos CM 3-3 A-R-A-E-AVBE C-A-A-N Home Booster Pump - 240v - ObsoleteCompact, reliable, horizontal, multistage, end-suction centrifugal pump with axial suction port and radial discharge port. The shaft, impellers and chambers are made of stainless steel.
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7237006
Clarke BPT1200SS 1” Stainless Steel Booster Pump - 230vClarke BPT1200SS 1 inch 1200W 61Lpm 46m Head Stainless Steel Booster Pump - 230v. Perfect for improving or maintaining water pressure.
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96807032
Grundfos CM5-3-A-R-A-E-AQQE Compact Horizontal End Suction Pump - 400v - Three Phase - 78 Ltr/minThe Grundfos CM 5-3 A-R-A-E-AQQE F-A-A-N is a quiet and reliable compact horizontal end-suction pump with a modular design. This modular design makes it easy to make customised solutions.
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96961047
Grundfos CM 3-4 A-R-I-E-AQQE F-A-A-N Horizontal Multi-Stage Booster Pump - 400v - Three Phase - 51 Ltr/minThe Grundfos CM3-4-1 is a reliable, quiet and compact horizontal end-suction pump. Its modular pump design makes it easy to make customised solutions.
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67218
Stuart Turner Aquaboost ABB 0903 2H-SPC/M Horizontal Twin Booster Set - 230v - Single Phase - 500 Ltr/minThe Aquaboost Horizontal Booster Set offers variable speed twin pump units capable of boosting cold water at up to 30 m3/h or up to 9.2 bar pressure in light commercial applications.
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67219
Stuart Turner Aquaboost ABB 0904 2H-SPC/M Horizontal Twin Booster Set - 230v - Single Phase - 500 Ltr/minThe Aquaboost Horizontal Booster Set offers variable speed twin pump units capable of boosting cold water at up to 30 m3/h or up to 9.2 bar pressure in light commercial applications.
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67221
Stuart Turner Aquaboost ABB 0906 2H-SPC/M Horizontal Twin Booster Set - 230v - Single Phase - 500 Ltr/minThe Aquaboost Horizontal Booster Set offers variable speed twin pump units capable of boosting cold water at up to 30 m3/h or up to 9.2 bar pressure in light commercial applications.
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67321
Stuart Turner Aquaboost ABB 0906 3H-SPC/M Horizontal Triple Booster Set - 230v - Single Phase - 750 Ltr/minThe Aquaboost ABB 0906 3H-SPC/M Horizontal Booster Set offers variable speed triple pump units capable of boosting cold water at up to 45 m³/h or up to 7.1 bar pressure in light commercial applications.
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47361
Stuart Turner Aquaboost IMATIC ABI IM 0504 2S CMT-24 1200 Cold Water Booster System - 230v - Single Phase - 333 Ltr/minThe Aquaboost iMatic range of booster sets features one or two submersible multistage pumps controlled by a dedicated variable speed frequency inverter.
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47076
Stuart Turner Aquaboost In-Tank ABI 0303 1S-SPC/M 0250 Cold Water Booster System - 230v - Single Phase - 91 Ltr/minThe Aquaboost range of automatic variable speed 'In-Tank' booster systems offers a compact, very quiet and simple to install solution for a range of domestic and commercial applications.
Available with 250 - 2000 litre cold water storage capacity, with flow rates up to 16 m3/h and heads up to 8 bar.
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Mains Booster Pumps
Mains booster pumps increase the water pressure and flow delivered from a property's incoming mains supply, improving performance at every tap, shower, and appliance. Modern units achieve this quietly, automatically, and within UK water regulations.
What is a Mains Booster Pump?
A mains booster pump is installed on the incoming cold water main, typically just after the stopcock, to raise pressure throughout the property. Regulation-compliant models limit their draw to 12 litres per minute, while higher demands are met with break tank arrangements.
How it works
- The pump is fitted to the incoming mains after the internal stopcock.
- Opening any outlet creates flow that the pump's sensor detects.
- The pump accelerates automatically, adding pressure to the supply.
- When outlets close, the pump stops and monitors quietly for the next demand.
Where are Mains Booster Pumps Used?
Homes with Weak Mains
Improving chronically poor incoming pressure.
Combi Boiler Properties
Ensuring adequate inlet pressure for hot water performance.
Apartments & Flats
Compensating for pressure lost in shared supplies.
Peak-Time Pressure Drops
Stabilising supply when local demand is high.
How to determine which Mains Booster Pump is the one you need?
Regulatory Compliance
Direct mains pumps must limit draw to 12 litres per minute in the UK.
Boost Pressure
Typical single-impeller units add around 1 to 2 bar.
Flow Requirement
Higher simultaneous demand may require a break tank system.
Installation Space
Compact inline units fit under sinks and in tight spaces.
Comparing Types of Mains Booster Pumps
Inline Mains Boosters
Compact single pumps fitted directly to the incoming main.
Accumulator Systems
Stored pressurised water supplements mains flow at peak times.
Break Tank Booster Systems
Tank and pump packages for unrestricted higher flows.
Smart Variable Speed Boosters
Electronically controlled pumps holding constant pressure.
We Stock Leading Brands
Here at Pump Sales Direct, we supply high-quality mains booster pumps from trusted manufacturers, with expert product support, fast delivery, and manufacturer warranty where applicable.
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FAQs
Is it legal to pump from the mains?
Yes, provided the pump draws no more than 12 litres per minute; beyond that, a break tank arrangement is required under UK water regulations.
How much pressure will a mains booster add?
Typical compliant boosters add roughly 1 to 2 bar to the incoming pressure, transforming outlet performance.
Will it help my combi boiler?
Yes, raising the cold inlet pressure improves both the boiler's hot water flow and shower performance.
Where is the pump installed?
Usually just after the internal stopcock on the rising main, in an accessible location such as under the kitchen sink.
What if my whole street has poor pressure?
A mains booster helps within your property; where flow itself is very restricted, an accumulator or break tank system may be the better solution.
Troubleshooting your Mains Booster Pump
Pump not activating: Confirm flow through the pump exceeds its start threshold and check the supply.
Boost lower than expected: Incoming flow may be restricted; check the stopcock is fully open and pipework is not scaled.
Frequent short runs: A dripping tap or passing toilet valve downstream repeatedly triggers the pump.
If your pump is beyond repair, our product experts available on Live Chat can help you find a suitable replacement, alternatively give us a call: 0800 008 6405
