WaterBoost - Advant Slim
The WaterBoost Advant Slim Range brings full-capacity water boosting to properties where the standard-footprint tank simply won’t fit. Each set pairs a WRAS-approved slimline storage tank with one or two DAB Esybox variable-speed pumps — supplied fully plumbed and ready to connect.
Purpose-built for narrow access routes — cellars, utility cupboards, plant rooms and internal doorways — the Slim range spans 400 to 2000 litres of storage in tank widths from just 400mm to 600mm. Where a standard tank is too wide to pass through a doorway or hallway, the taller, narrower Slim profile clears the same route without sacrificing capacity.
Single and twin-pump configurations are available using DAB Esybox Mini3 or DAB Esybox pumps, delivering up to 150 l/min at 3 bar on twin sets. All sets include WiFi, app control, Google Home and Alexa compatibility. UK-manufactured tanks carry an outstanding 10-year warranty; DAB pumps a 3-year warranty. Delivery typically 1–2 working days.
10 products
The WaterBoost WB-Advant Slim 400 Mini3 is the narrowest tank in the entire WaterBoost range — a compact, ultra-slim water boosting system for domestic properties…
The WaterBoost WB-Advant Slim 400 Esybox is the narrowest tank in the entire WaterBoost range paired with the higher-flow DAB Esybox pump — delivering serious…
The WaterBoost WB-Advant Slim 500 Mini3 is a compact slimline water boosting system for high-demand domestic properties with tight plant room access. A 500-litre WRAS-approved…
The WaterBoost WB-Advant Slim 500 Esybox is a compact slimline water boosting system for high-demand domestic properties with tight plant room access. A 500-litre WRAS-approved…
The WaterBoost WB-Advant Slim 500 Esybox Twin brings dual-pump redundancy and high flow performance to the compact slimline range. A 500-litre WRAS-approved UK-manufactured Advant slimline…
The WaterBoost WB-Advant Slim 1000 Mini3 is a complete, large-capacity slimline water boosting system for high-demand domestic and light commercial properties with restricted plant room…
The WaterBoost WB-Advant Slim 1000 Esybox provides large-scale slimline boosting for high-demand domestic and light commercial properties with restricted plant room access. A 1000-litre WRAS-approved…
The WaterBoost Advant Slim 1000 Litre (2104410SL) is a dual-pump boosting system engineered for properties where storage capacity matters but the standard 1000-litre tank simply…
The WaterBoost WB-Advant Slim 2000 Esybox combines two 1000-litre WRAS-approved UK-manufactured slimline tanks (each 600mm W × 1250mm L × 1703mm H) linked together for…
The WaterBoost WB-Advant Slim 2000 Esybox Twin is the flagship of the Slim range — combining two 1000-litre WRAS-approved UK-manufactured slimline tanks (each 600mm W…
Frequently Asked Questions
Quick answers to common questions about the WaterBoost – Advant Slim. For technical specifications, see the product details above; for sizing or installation advice, contact our team. If you have any other questions, we're happy to help.
What is a mains pressure boosting system?
A mains pressure boosting system increases the pressure and flow of water from the incoming mains supply into a property. It typically combines a pump and a storage or expansion tank, drawing water from the mains and delivering it to taps, showers and appliances at a stronger, more consistent pressure. They are used where the incoming mains is too weak to serve modern outlets reliably.
When do I need a mains booster pump?
You normally need a mains booster if static mains pressure is below 1.5 to 2 bar, if showers run weakly when other taps are open, or if combi boilers struggle to deliver hot water. Anglian Pumping recommends checking static pressure at the stop tap before specifying a system, then choosing a model rated for the number of bathrooms and outlets in the property.
What size mains booster do I need for my home?
Sizing depends on the number of bathrooms, the type of fittings and the static mains pressure. As a guide, a 1 to 2 bathroom property with combi boiler or single shower often needs 1.6 to 3 bar boost. A 2 to 3 bathroom property typically needs 3 to 4.5 bar with an integral break tank. Larger homes need a tank-and-pump system such as the DAB Esybox with Esytank or a Powertank set.
What is a water booster pump?
A water booster pump increases the pressure of an existing water supply to give stronger flow at taps, showers and appliances. It can be a small inline pump fitted to the incoming mains, or a larger pump and tank set that draws from a break tank to feed the whole house. Boosters do not create water – they raise the pressure of the water already coming in.
What is the difference between an inline booster and a tank-and-pump booster?
An inline booster connects straight onto the incoming mains and is limited to 12 litres per minute under UK water regulations – examples include the Salamander HomeBoost and WaterBoost WB-Compact. A tank-and-pump booster, such as the Grundfos Home Booster or DAB Esybox with Esytank, draws from a break tank and can deliver much higher flow rates for larger homes with multiple bathrooms.
What is a variable speed booster pump?
A variable speed booster uses an inverter to adjust pump speed in real time to match demand. It maintains constant pressure as outlets open and close, runs more quietly than a fixed-speed pump and typically saves up to 50 per cent of the energy a fixed-speed equivalent would use. The DAB Esybox, DAB Esybox Mini 3 and Grundfos Scala2 are common variable speed examples.