Poor Shower Pressure
A weak or spluttering shower, especially noticeable when another tap is running..
A weak or spluttering shower, especially noticeable when another tap is running.
What is actually going on
A weak or spluttering shower, especially noticeable when another tap is running.

The realistic causes, in order
A scaled shower head or restricted hose, which is the cheapest thing to rule out A gravity-fed system with insufficient head between the cold tank and the shower outlet A pressure-balancing or thermostatic cartridge that has partly blocked with debris
What we test on site
Flow rate at the outlet with the head removed, to separate head from supply Static head available on a gravity system, or incoming mains flow on a combi Cartridge and filter condition inside the valve
What you can safely look at with poor shower pressure
- Unscrew and descale the shower head — it fixes a surprising proportion of cases
- Test flow with the head removed to see whether the supply is the limit
- A pump fitted to the wrong kind of system, or without the correct feed arrangement, can pull air or overload the supply. The system type dictates the right solution.
Who does the work
- Gas Safe registered engineers — registration 554328
- Worcester Bosch accredited installer
- John The Plumb Ltd, company registration 10026483
Get poor shower pressure diagnosed properly
The fix ranges from a descale to a correctly specified pump or valve — we quote for the one your system actually needs.
Questions we get asked
What causes poor shower pressure in a bathroom?
A scaled shower head or restricted hose, which is the cheapest thing to rule out
What normally puts poor shower pressure right?
The fix ranges from a descale to a correctly specified pump or valve — we quote for the one your system actually needs.
Is it safe to keep using the system with poor shower pressure?
A pump fitted to the wrong kind of system, or without the correct feed arrangement, can pull air or overload the supply. The system type dictates the right solution.
