UK trade guideElectrical Spares 6 min readUpdated 9 July 2026

How to Fit a Shower Booster Pump (UK)

Install a Salamander CT75 or Stuart Turner Monsoon 2.0 bar booster on a gravity-fed shower. Positive vs negative head.

SalamanderStuart TurnerGrundfos

Head type

Positive head — pump below cold tank base by ≥600 mm. Negative head — pump above tank; fit negative-head model with pressure sensor.

Fit

Fit on rubber anti-vibration mat. 22 mm flexible hoses. Strainer washers on inlets. Dedicated 3A fused spur (not shared with lighting).

Frequently asked questions

Do I need a separate cold feed?
Yes — the pump must draw from its own tapping in the cold tank (Water Regs Fluid Category 2).
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