How to Increase Water Pressure in a House in Kenya (2026)
Weak showers and taps that trickle on upper floors are common in Kenyan homes, especially with roof tanks. The fix depends on the cause; a pump is not always the answer.
Quick answer: First check whether the problem is the supply (low mains pressure or an empty tank), gravity (tank not high enough), or a blockage (dirty aerators, partly closed valves, scale). If gravity is the issue, a booster pump with an automatic pressure controller, such as the Booster Pump Set for RO and Water Pressure Systems (KSh 18,500), gives steady pressure to the whole house.
Find the Cause
| Symptom | Likely cause | Fix |
|---|---|---|
| Low pressure everywhere | Tank too low or low mains supply | Raise tank or add a booster pump |
| One tap weak | Blocked aerator or partly closed valve | Clean aerator; open isolation valve |
| Weak hot shower only | Instant shower limits flow | Booster pump or proper shower unit |
| Pressure drops when others use water | Small pipes or long runs | Upsize main pipe; booster pump |
Quick Free Fixes
- Unscrew tap aerators and shower heads and clean out grit and scale.
- Check every gate or ball valve is fully open.
- Make sure the tank outlet strainer is clean.
- Look for leaks that steal pressure.
Gravity: How High Should the Tank Be?
Every metre of height gives roughly 0.1 bar of pressure. A tank sitting just 2–3 m above the shower gives very weak flow; raising it or adding a pump helps.
Booster Pumps and Controllers
KSh 18,500
KSh 9,500
KSh 4,500
KSh 76,000
KSh 84,000
| Product | Use | Price |
|---|---|---|
| Booster Pump Set for RO and Water Pressure Systems | Whole-house pressure set | KSh 18,500 |
| Automatic Pump Pressure Controller and Switch Kit | Starts/stops the pump automatically | KSh 9,500 |
| Pressure Switch | Pressure switch | KSh 4,500 |
| GRUNDFOS SHOWER BOOSTER PUMP STR2 1.5BAR | Shower booster | KSh 76,000 |
| GRUNDFOS SHOWER BOOSTER PUMP STR2 2.0BAR | Stronger shower booster | KSh 84,000 |
See booster pump and pressure controller guide and water pump prices.
Worked Example: Weak Upstairs Shower
A two-storey house has a 2,000 L tank on a 3 m stand. The upstairs shower head is only about 1 m below the tank base, giving roughly 0.1 bar, which is too weak. Cleaning the head helps slightly. The lasting fix is a booster pump with an automatic pressure controller after the tank outlet, plus isolation valves either side of the pump so it can be serviced.
How to Measure Your Pressure
Screw a cheap pressure gauge onto an outside tap, or time how long it takes to fill a 10 L bucket. Under about 40–60 seconds per 10 L at the shower is usually comfortable; much slower means you need more height or a pump.
Common Mistakes to Avoid
- Buying a pump without checking for blockages first.
- Running a pump dry without float or dry-run protection.
- Oversized pumps that bang pipes.
- No isolation valves around the pump for servicing.
Not sure which one fits? Send us your details on WhatsApp or through the product page and we will help you choose.
Frequently Asked Questions
How can I increase water pressure in my house?
Clean aerators and open valves, raise the tank, or fit a booster pump with an automatic controller.
Why is my shower pressure low?
Low tank height, blocked shower head, or an instant shower that limits flow.
Do I need a booster pump?
If the tank cannot be raised and pressure is low everywhere, yes.
How much is a booster pump in Kenya?
The Booster Pump Set for RO and Water Pressure Systems is KSh 18,500 on Buy More Mall.
How high should a water tank be?
Higher is better; each metre adds about 0.1 bar.
Can a booster pump run on a roof tank?
Yes, with dry-run protection so it stops when the tank is empty.
Prices shown are regular prices on Buy More Mall. Many products are currently on offer, so open the product page to see today's price.
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