Low Water Pressure at Home? Booster Pumps, Pressure Controllers & Pressure Tanks Explained (Kenya)

Weak showers, taps that dribble upstairs and a geyser that never gets enough flow are common in Kenyan homes fed by gravity from a roof tank. The fix is usually a booster pump with a pressure controller or pressure tank. This guide explains the parts, what they cost on Buy More Mall and how to put them together.

Why Is My Water Pressure Low?

A tank on the roof gives only about 0.1 bar for every metre of height between the water level and the tap. A tank 3 m above a shower gives just 0.3 bar, which feels weak. Most showers and instant heaters work well at 1.5 to 3 bar. A pump adds the missing pressure.

Option 1: Pump + Pressure Controller (Most Popular)

A pressure controller (also called a press control or flow switch) screws onto the pump outlet. It starts the pump when a tap opens and pressure drops, and stops it when the taps close. Most also stop the pump if the water runs out, which protects it from running dry.

Option 2: Pump + Pressure Tank

A pressure tank stores a small amount of water under pressure, so the pump does not start every time someone washes their hands. It makes pressure smoother and reduces pump starts, which helps the pump last longer. The 24 L Varem kit (KSh 9,000) is a common size for homes. Its rubber membrane means the water never touches the steel.

Option 3: Shower Booster Pumps

If only one bathroom has a problem, a compact shower booster can be enough. The Grundfos STR2 range runs quietly and is rated for continuous duty.

Which Pump for a Whole House or Apartment Block?

• Single house: a 0.6 to 1.1 kW jet pump such as the Pedrollo JSW1A or Dayliff DDJ1100 with a controller.
• Large house, hotel or several floors: a compact multistage such as the Grundfos Scala 2 (KSh 73,000), which has built-in pressure control.
• Apartment blocks and irrigation: a vertical multistage pump from the CNP CDLF range with a pressure tank or variable speed control.

Full pump price lists are in Water Pump Price in Kenya.

Installation Tips

1. Fit the pump close to the tank, with the shortest possible suction pipe and a non-return valve.
2. Use a pipe size at least as large as the pump inlet. Thin pipes cut flow.
3. Protect the pump from running dry with a controller or float switch (KSh 1,500).
4. Use an electrician for the wiring and a dedicated circuit breaker.

Not sure which one fits? Send us your details (water source, flow, product or site) on WhatsApp or through the product page and we will help you choose.

Frequently Asked Questions

What is the best booster pump for a house in Kenya?

For most houses a 0.6 to 1.1 kW jet pump with a pressure controller works well. Compact multistage pumps such as the Grundfos Scala 2 are quieter and give steadier pressure.

How much is a pressure controller in Kenya?

From KSh 8,500 for the Mondial Presscontrol to KSh 29,000 for the Davey Torrium II.

Do I need a pressure tank?

Not always, but it reduces how often the pump starts, which saves power and extends pump life. It is recommended where there are small leaks or frequent short water use.

Why does my pump keep switching on and off?

Usually a small leak, a faulty non-return valve or no pressure tank. Controllers with anti-cycling protection, such as the Pedrollo Easy Press, help.

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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