Flow and pressure
Most disappointment in the shower family is the same arithmetic: coverage is flow divided by area, and area grows with the square of the diameter. A 30 cm head spreads the same litres more than twice as thinly as a 20 cm one. This list is what to buy when the supply is the limit.
Four purchases, chosen so that none of them asks for pressure you have not got.
The GROHE head is the piece you hold, and on a weak supply it is where the improvement is. Concentrated patterns keep their feel at low flow where a wide rain pattern turns into drizzle.
Before deciding a new head is weak, look in the inlet for the moulded flow restrictor and read whether it is designed to come out.
The Auralum rain head is deliberately at the small end. This is the counter-intuitive purchase of the list: on 1.5 bar, a 20 cm face feels like a shower and a 30 cm face feels like standing in mist.
The SCHÜTTE rail set puts the head where you want it without replacing the mixer, which is the expensive part and the part most likely to be pressure-sensitive. Measure your existing bracket centres before ordering.
The hansgrohe hose has an anti-twist swivel, and a hose that has not kinked is a hose that is not costing you flow. Check that cone seals are supplied.
A large ceiling-mounted rain head, a body-jet column, and any thermostatic mixer whose stated minimum operating pressure is above what you have. All three are good products asked to do something the supply cannot support.
Hand shower · three modes on a rotary control · 8 l/min stated · full performance from 1.0 bar · SpeedClean silicone · drop-protection silicone ring
The only hand shower here that states the pressure it works properly at — 1.0 bar — which matters far more than the saving it advertises.
Best for: A gravity-fed or low-pressure system, where most water-saving heads simply feel thin.
≈ £20 / 29 €
Rain head · 20 × 20 cm square (8 in) · stainless · G1/2 female · 360° rotation and 15° tilt · 100 silicone nozzles
A 20 cm square stainless head that publishes its nozzle count and its tilt angle — two small facts nobody else on this page bothers to give.
Best for: A modern square-fitting bathroom in a hard-water area, where the nozzles need to be wiped rather than soaked.
≈ £27 / 20 €
Rail set · four-mode hand shower · separate water-saving seal supplied · height-adjustable slider · complete fixings · German maker
A complete rail set for fifteen euros whose most interesting part is a separate water-saving washer you can choose to fit — or not.
Best for: A first fit or a rental where the whole set has to be replaced cheaply, on a wall being drilled fresh.
≈ £18 / 15 €
Shower hose · 1.60 m · smooth plastic with kink protection · a special fixing that prevents twisting — stated · G 1/2 at DN15 · sealing rings included
The hose that solves the daily annoyance nothing else here addresses: a fixing that stops it winding itself into a spiral.
Best for: A shower used every day by several people, where the hose ends up as a coiled spring by Wednesday.
≈ £28 / 20 €
A gauge that screws onto a tap or a washing-machine valve reads it directly and costs very little. Your supplier publishes a network figure too, though what arrives at an upstairs shower depends on your own pipework.
No. It stabilises temperature and does nothing for flow — and below the minimum pressure the maker states, it regulates badly rather than failing safely. On a weak supply it changes the problem rather than solving it.
It can be, and it is a plumbing decision rather than a shopping one: what may be fitted depends on your supply type and on your national rules. This site stops at what a fitting needs and points at those rules.
If it weakened gradually, almost certainly scale. If it dropped suddenly, look for a blockage or a partly closed valve.
On low pressure it usually makes things worse, spreading limited flow across many holes. Concentration is what weak pressure needs.
One designed to work with limited pressure, typically by concentrating flow. Many heads state a minimum pressure they need.
It is the most likely fix and the cheapest. Scale builds inside the head and restricts flow long before it is visible.
Only if the system pressure itself is the limit and everything else has been ruled out. It is a plumbing job, not a purchase.
The hose and any inline filter scale up too. Cleaning only the head leaves the restriction in place.
Taps, shower systems and mirror cabinets swing by fifty euros or more across the year, and the biggest "discounts" often land at prices the same model sold for six weeks earlier. UniverTrack tracks the real price history across retailers, spots fake reductions, and alerts you when it is genuinely the moment to buy.
