WaterBoost- Slimline EXT
WaterBoost WB-EXT Slimline 150 Mini3 Variable Speed 2501210
- Established 1975
- Trusted by thousands of customers
The 150 litre WaterBoost “Slimline EXT” system, featuring an external variable speed pump, has been designed as a highly practical and cost-effective solution for properties experiencing low water pressure or inadequate flow.
Ideal for customers looking to reduce installation costs while still benefiting from a high-quality, energy-efficient boosting solution, the Slimline EXT delivers dependable performance with exceptional reliability.
The external pump is purposefully designed to sit neatly alongside the storage tank, providing easy access for servicing and maintenance while maintaining a compact and professional installation.
Capable of delivering up to 50 litres per minute at 3 bar, the Slimline EXT provides consistent pressure and improved flow for everyday household use.
With compact dimensions of just 600mm wide and 650mm high, the tank is designed to pass easily through a standard doorway and is supplied fully pre-built and ready to install. This makes it ideal for both new and existing properties, allowing it to be conveniently positioned under stairs, in garages, or within utility rooms.
The Slimline range is perfectly suited to 1–2 bedroom homes, particularly where water pressure is poor and floor space is limited, offering a discreet, high-performance solution without compromise.
More about this product
The Slimline range comes complete with –
- Enduramaxx Blue 150 litre WRAS approved slimine water tank – 5 year warranty 600mm dia x 650mm h
- DAB Esybox Mini3 variable speed pump inc pre-fitted plug – 3 year warranty
- 2 x Connections union
- 1 x 3/4″ ball float valve and float
- 1 x 600mm tank to pump connection hose
- 1 x pre-fitted 1″ tank outlet
- 1 x Bylaw 30 kit
Standard delivery:
Standard delivery is free for all orders except for some low cost/low margin items where standard delivery is £6.75. Some difficult to transport goods also have a varying carriage charge applied.
Please contact us for the estimated standard delivery times of the products that we have in stock, by dropping us a message on our Whatsapp or Live chat.
Deliveries will typically be made between 7am and 6pm, Monday to Friday (excluding public holidays).
Next day delivery:
Next working day delivery is available for a £15.00 + vat delivery charge.
Orders must be placed before 12 noon to qualify for next working day delivery. Orders placed after 12 noon on Thursday but before noon on Friday will be delivered the following Monday. Orders placed after 12 noon on Friday will be delivered on Tuesday.



