WaterBoost - Grand Range
Complete stored-water boosting systems: a single slimline Enduramaxx break tank paired with a twin DAB Esybox booster set. The Grand is our largest range, built for properties where a smaller buffer simply runs out — and it's the only WaterBoost range that reaches 5,000 litres, and the only one offering commercial-grade DAB Esybox MAX pump sets. Choose your storage volume, then choose the pump to match your building's height and your electrical supply.
| Twin pump set | Flow @ 3 bar | Max flow | Max head | Supply |
|---|---|---|---|---|
| Esybox with Esytwin | 140 L/min | 240 L/min | 65 m / 6.4 bar | 230 V |
| Esybox MAX 45/120 M | 330 L/min | 480 L/min | 58 m / 5.7 bar | 230 V · 9.4 A |
| Esybox MAX 60/120 M | 420 L/min | 580 L/min | 69 m / 6.7 bar | 230 V · 12.5 A |
| Esybox MAX 60/120 T | 420 L/min | 580 L/min | 69 m / 6.7 bar | 400 V 3φ · 4.4 A |
Currents are per pump, and maximum flow occurs at minimum head — the 3 bar column is the more realistic comparison for most installations. Tank size sets how long you can run at peak demand; the pump sets how high and how far you can push the water. The two choices are independent, so every pump option is available on every tank.
12 products
The WaterBoost Grand 2000 is the entry point of the Grand range — a 2,000L Enduramaxx slimline tank paired with a DAB Esybox Twin for…
The WaterBoost Grand 3000 is the middle of the Grand range — a 3,000L Enduramaxx slimline tank paired with a DAB Esybox Twin for full…
The WaterBoost Grand 5000 is the flagship of the Grand range — a 5,000L Enduramaxx slimline tank paired with a DAB Esybox Twin for full…
A 2,000 litre slimline break tank paired with a twin DAB Esybox MAX 45/120 M booster set on a 2 Esydock MAX base. Full stored-water capacity and…
A 3,000 litre slimline break tank paired with a twin DAB Esybox MAX 45/120 M booster set on a 2 Esydock MAX base. Half as much stored…
A 5,000 litre slimline break tank paired with a twin DAB Esybox MAX 45/120 M booster set on a 2 Esydock MAX base. The flagship of the…
A 2,000 litre slimline break tank paired with a twin DAB Esybox MAX 60/120 M booster set on a 2 Esydock MAX base. The highest pressure available…
A 3,000 litre slimline break tank paired with a twin DAB Esybox MAX 60/120 M booster set on a 2 Esydock MAX base. More storage than the…
A 5,000 litre slimline break tank paired with a twin DAB Esybox MAX 60/120 M booster set on a 2 Esydock MAX base. The top of the…
A 2,000 litre slimline break tank paired with a twin DAB Esybox MAX 60/120 T booster set on a 2 Esydock MAX base. Identical performance to the…
A 3,000 litre slimline break tank paired with a twin DAB Esybox MAX 60/120 T booster set on a 2 Esydock MAX base. Half as much stored…
A 5,000 litre slimline break tank paired with a twin DAB Esybox MAX 60/120 T booster set on a 2 Esydock MAX base. The flagship of the…
Frequently Asked Questions
Quick answers to common questions about the WaterBoost – Grand Range. 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.