What is the difference between positive head, universal, regenerative and centrifugal shower pumps, and which one suits your bathroom?

Positive head pumps are designed where both hot and cold supplies are at similar pressure, while universal pumps will work if one supply is gravity-fed and the other is on mains pressure. Regenerative pumps give higher pressure at lower flow, ideal for a single powerful shower, whereas centrifugal pumps deliver greater flow for baths, multiple outlets or whole-bath boosting. if your hot feed comes from a loft tank and your cold is mains, you'd lean to a universal pump; if you want a strong single shower, a regenerative 1.5–2.4 bar model is a good match.

How do I choose the right bar rating for a shower or house pump?

Look at what you want to supply: modest boost for a single shower often needs about 1.5–2.0 bar, stronger showers or multi-outlet setups benefit from 2.6–3.0 bar, and whole-house boosting or high-demand systems may need 3.0 bar or more. The product range shows examples across this spread, from 1.5 bar Showermate models to 3.0–4.0 bar Monsoon and RP100 units. If you only want to improve a single mixer shower, a 1.5–2.0 bar pump is usually sufficient; if you plan to run a shower and taps simultaneously, choose a higher bar rating.

When should you buy a mains water booster pump instead of a shower pump?

Buy a mains booster pump when you want to raise pressure to multiple outlets across your home, not just the shower; mains boosters such as the Salamander Homeboost or Stuart STORMBOOST range are built for whole-house use. A shower pump is focused on one bathroom and is usually single- or twin-impeller for hot and cold supplies. use a TapBoost or a dedicated mains booster if poor pressure affects kitchen taps and multiple bathrooms as well as the shower.

Are twin-impeller pumps worth the extra cost compared with single-impeller pumps?

Twin-impeller pumps have separate impellers for hot and cold supplies, so they give higher combined flow and steadier pressure under heavy demand, which helps if you run multiple outlets or have large shower systems. Single-impeller pumps are quieter, cheaper and perfectly adequate for most single-shower installations. If you have a family bathroom with a bath and shower or a multi-jet shower, a twin 2.6–3.0 bar model will perform noticeably better.

When would you need a condensate pump or a macerator in your plumbing setup?

Use a condensate pump when a boiler or appliance cannot discharge condensate by gravity,these pumps remove contaminated water from boilers and fridges to a suitable waste point. Choose a macerator when you want to install a toilet or bathroom where the sewer level is too high or the soil stack is distant; a macerator grinds waste and pumps it to the drain. a basement boiler that cannot reach the external drain needs a condensate pump, while a cloakroom below the main soil pipe often needs a Saniflo macerator.

Page 3 of 4 Pumps

Grundfos STR2 1.5CN Twin Impeller Universal Head Shower Pump - 98950219

5.0

7 ratings

£399.67 inc
VAT

Grundfos STR2 2.0CN Twin Impeller Negative Head Shower Pump - 98950220

4.8

8 ratings

£405.32 inc
VAT

Grundfos SSR2 2.0CN Single Impeller Negative Shower Pump - 98950231

4.8

11 ratings

£280.57 inc
VAT

Stuart Turner Monsoon Twin Impeller Universal Shower Pump 4.5 Bar - 46412

5.0

6 ratings

£702.49 inc
VAT

Stuart Turner Monsoon Single Impeller Universal 2.0 Bar Shower Pump - 46498

5.0

15 ratings

£391.82 inc
VAT

Stuart Turner Monsoon Single Impeller Positive Head 4.5 Bar Shower Pump - 46420

5.0

2 ratings

£321.14 inc
VAT

Stuart Turner Showermate TP Single Impeller Positive Head 2.0 Bar Shower Pump - 49086

4.9

26 ratings

£134.06 inc
VAT

Salamander 1.5 Bar Single Centrifugal Shower Pump - RP55SU

5.0

3 ratings

£323.02 inc
VAT

Stuart Turner Submersible Supersub 150VA Pump - 46538

5.0

2 ratings

£100.80 inc
VAT

Saniflo Sanicondens Eco Condensate Pump V2 - 1133

5.0

2 ratings

£88.55 inc
VAT

saniflo-sanicondens-clim-mini-condensate-pump-1131

£122.51 inc
VAT

salamander-accuboost-120l-unpumped-accumulator-tank-acc-120-tnk

£179.47 inc
VAT

stuart-turner-showermate-eco-shower-pump-15-bar-twin-positive-impeller-47342

Stuart Turner Showermate Shower Pump 1.5 Bar Twin Positive Impeller - 47342

5.0

6 ratings

£159.14 inc
VAT

Stuart Turner Showermate Shower Pump 2.6 Bar Twin Positive Impeller - 47344

4.7

7 ratings

£240.98 inc
VAT

Stuart Turner Showermate Shower Pump 2.0 Bar Twin Universal Impeller - 47376

4.7

7 ratings

£467.81 inc
VAT

Page 3 of 4 Pumps

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Grundfos STR2 1.5CN Twin Impeller Universal Head Shower Pump - 98950219

Grundfos STR2 2.0CN Twin Impeller Negative Head Shower Pump - 98950220

Grundfos SSR2 2.0CN Single Impeller Negative Shower Pump - 98950231

Stuart Turner Monsoon Twin Impeller Universal Shower Pump 4.5 Bar - 46412

Stuart Turner Monsoon Single Impeller Universal 2.0 Bar Shower Pump - 46498

Stuart Turner Monsoon Single Impeller Positive Head 4.5 Bar Shower Pump - 46420

Stuart Turner Showermate TP Single Impeller Positive Head 2.0 Bar Shower Pump - 49086

Salamander 1.5 Bar Single Centrifugal Shower Pump - RP55SU

Stuart Turner Submersible Supersub 150VA Pump - 46538

Saniflo Sanicondens Eco Condensate Pump V2 - 1133

Saniflo Sanicondens Clim Mini Condensate Pump - 1131

Grundfos Home Booster Pump - UPA 15-90 N

Salamander Non Return Valve - NRV

Salamander Cold Water Storage Protection - WSP

Salamander Accuboost 120L Unpumped Accumulator Tank - ACC-120-TNK

Salamander Accuboost 180L Unpumped Accumulator Tank - ACC-180-TNK

Stuart Turner Showermate Shower Pump 2.6 Bar Single Positive Impeller - 47341

Stuart Turner Showermate Shower Pump 1.5 Bar Twin Positive Impeller - 47342

Stuart Turner Showermate Shower Pump 2.6 Bar Twin Positive Impeller - 47344

Stuart Turner Showermate Shower Pump 2.0 Bar Twin Universal Impeller - 47376

Salamander TankBoost 100L 3.0 Bar Mains Water Booster Tank TNK-100-SUB

Salamander TankBoost 200L 3.0 Bar Mains Water Booster Tank TNK-200-SUB

Salamander TankBoost 350L 3.0 Bar Mains Water Booster Tank TNK-350-SUB

Salamander TankBoost 450L 3.0 Bar Mains Water Booster Tank TNK-450-SUB

Salamander TankBoost 100L Additional Storage Tank TNK-100

Salamander TankBoost 350L Additional Storage Tank TNK-350

Salamander TankBoost 450L Additional Storage Tank TNK-450

Salamander Catalytic Water Conditioner 300x28mm 1/2" BSP-T - CWCOND02

Salamander Catalytic Water Conditioner 330x35mm 3/4" BSP-T - CWCOND03

Saniflo Sanicondens Deco+ Condensate Pump - 1135

Saniflo Sanicondens Pro Condensate Pump - 1140

Saniflo Sanicondens Best Flat+ Condensate Pump - 1142

Saniflo Sanineutral Mini Condensate Neutraliser - 10823

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Filter By 101 results

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