How much pressure boost do I need and what do the 2.4–3.6 bar ratings mean for your shower?

The bar rating is the size of the pressure boost the pump will add to your supply, higher numbers give a stronger boost. Models here range from 2.4 (Salamander RP80SU) and 2.5 (CT85XTRA) up to 3.0 (CT Force 30) and 3.6 (RP120SU); a 2.4–2.5 bar pump will noticeably improve a single shower, while 3.0–3.6 bar is better if you want a powerful, spa‑like spray or need more force when water is very weak. Bear in mind these are single impeller pumps that boost one supply (hot or cold). If you want a lively mixer shower or stronger spray for body jets, aim for a 3.0 bar or above.

Can a single impeller pump boost both the hot and cold supplies at once?

No, a single impeller pump boosts one supply only, either hot or cold. If both sides are weak you would need a twin impeller pump or separate pumps to boost both simultaneously. For many homes where only the cold or hot is underpowered, a single impeller (like the CT85XTRA or RP80SU) is a simpler, lower‑cost solution.

What’s the practical difference between regenerative and centrifugal single‑impeller pumps and which will suit your bathroom?

Regenerative pumps typically produce higher pressure at lower flow, making them ideal for a single shower outlet; centrifugal pumps deliver higher flow and are better when you might run several outlets together. a regenerative 2.5 bar CT85XTRA is a strong, budget‑friendly choice for one powerful shower, whereas the 3.6 bar centrifugal RP120SU is a good option if you need more flow for a bath and shower used at the same time.

Is it worth paying more for a brass‑bodied pump rather than a plastic one?

Brass bodies are tougher and resist corrosion and heat better, so they tend to last longer in demanding conditions or hard water areas. Plastic models (three included in our range) are lighter and usually cheaper, the CT85XTRA is an example of good value, and are fine for less intensive use. If you use your shower frequently or want the longest service life, brass is worth the investment; for occasional use, a quality plastic model will do the job.

Which model gives the best value if you want a solid boost but are on a modest budget?

The Salamander CT85XTRA at the current product price is the most budget-friendly option in this range and offers a 2.5 bar regenerative boost, so you get a strong improvement without a high price. The trade-off is a lower maximum bar than the 3.0–3.6 models and typically plastic construction, but it is well suited to a single shower where you want good performance for less money. If you need a noticeably stronger spray or higher flow, stepping up to the 3.0 or 3.6 bar models will cost more but deliver the extra power.

Salamander Single Impeller Pumps - Over 2.0 Bar

If you’ve got a seriously underpowered hot or cold supply then chances are you need to get a shower pump fitted to boost it. Salamander have the answer with their range of single impeller shower pumps with a bar of 2.0 or more. They’re designed with a large pressure boost in mind with the larger the bar referring to the larger the boost. Being a Salamander pump they’ll come covered with a brilliant warranty and aftersales service too.

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Salamander Regenerative Single Impeller 2.5 Bar Shower Pump - CT85XTRA

5.0

9 ratings

£202.32 inc
VAT

Salamander 2.4 Bar Single Universal Centrifugal Shower Pump - RP80SU

5.0

9 ratings

£352.61 inc
VAT

Salamander 3.6 Bar Single Universal Centrifugal Shower Pump - RP120SU

4.7

6 ratings

£383.81 inc
VAT

Salamander CTFORCE30PS Shower Pump 3.0 Bar Single Impeller Positive Head

5.0

2 ratings

£292.50 inc
VAT

Salamander CT Force 30 SU 3.0 Bar Single Impeller Shower Pump- CTFORCE30SU

5.0

2 ratings

£387.71 inc
VAT

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Salamander Regenerative Single Impeller 2.5 Bar Shower Pump - CT85XTRA

Salamander 2.4 Bar Single Universal Centrifugal Shower Pump - RP80SU

Salamander 3.6 Bar Single Universal Centrifugal Shower Pump - RP120SU

Salamander CTFORCE30PS Shower Pump 3.0 Bar Single Impeller Positive Head

Salamander CT Force 30 SU 3.0 Bar Single Impeller Shower Pump- CTFORCE30SU

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