Shower Booster Pumps: Fixing Weak Showers
- Low tank height = weak gravity pressure
- Booster starts automatically with flow
- Listed models add 1.5 or 2.0 bar
- A hot-water circulator is a different pump
On this page
Why Is My Shower Weak?
- The roof tank is only slightly above the shower head.
- Long, narrow pipes lose pressure.
- A clogged shower head or partly closed valve.
- Low supply pressure from the main.
Clean the shower head and check valves first; if the pressure is still low, a booster is the fix.
How a Shower Booster Works
The pump sits in the line to the shower. When you open the tap, it senses the flow and starts; when you close it, it stops. Pumps are rated by the extra pressure they add.
GRUNDFOS SHOWER BOOSTER PUMP STR2 1.5BARKSh 76,000
GRUNDFOS SHOWER BOOSTER PUMP STR2 2.0BARKSh 84,000| Product | Price |
|---|---|
| GRUNDFOS SHOWER BOOSTER PUMP STR2 1.5BAR | KSh 76,000 |
| GRUNDFOS SHOWER BOOSTER PUMP STR2 2.0BAR | KSh 84,000 |
Current listed prices incl. VAT (updated 4 October 2026).
Installation Tips
- Feed it from a tank with enough water, as the maker specifies.
- Install it where it is dry and easy to service, with a proper power point.
- Use isolation valves on both sides.
- Have a plumber and electrician fit it.
Hot-Water Circulators
A circulator pump is different: it keeps hot water moving in a loop so it arrives at the tap quickly, saving the water wasted while waiting for it to warm up.
| Product | Price |
|---|---|
| GRUNDFOS CIRCULATOR PUMP ALPHA 2 | KSh 52,000 |
| GRUNDFOS SCALA 2 PUMP | KSh 73,000 |
Current listed prices incl. VAT (updated 4 October 2026).
Whole-house pressure: booster pumps and pressure tanks.
Frequently asked questions
How do I increase shower pressure?
Clean the shower head and check valves; if the tank is too low, fit a shower booster pump.
How much is a shower booster pump in Kenya?
Our Grundfos shower boosters start from KSh 76,000.
What is the difference between 1.5 and 2.0 bar boosters?
The 2.0 bar model adds more pressure for higher or longer pipe runs.
Is a circulator pump the same as a booster?
No, a circulator moves hot water in a loop so it arrives quickly; a booster raises pressure.