WaterBoost – Advant
WaterBoost WB – Advant 500 Esybox 2103110
- Established 1975
- Trusted by thousands of customers
The WaterBoost WB-Advant 500 Esybox is a high-performance boosting system engineered for larger domestic homes and light commercial applications. A 500-litre WRAS-approved Advant tank (650mm W × 870mm L × 1200mm H) pairs with the DAB Esybox external variable speed pump, delivering 80 l/min at 3 bar and up to 6.5 bar maximum — with WiFi, DConnect app, H2D technology, Google Home and Alexa voice control.
The Esybox sits alongside the tank for full pump accessibility at all times, running at an exceptionally quiet 43 dB(A). The tank connects directly to the mains via the pre-fitted ¾” ball float valve. All interconnecting pipework is supplied — no site assembly required. Ideal for garages and plant rooms.
The UK-manufactured tank carries an outstanding 10-year warranty and the DAB Esybox a 3-year warranty. Delivery is typically 1–2 working days.
WRAS tank & pump
6.5 bar max
10yr tank warranty
1–2 day delivery
UK-manufactured tank
More about this product
The WaterBoost WB-Advant 500 Esybox is the most capable system in the WB-Advant 500 range. A 500-litre WRAS-approved UK-manufactured Advant tank (650mm W × 870mm L × 1200mm H) pairs with the DAB Esybox external variable speed pump, delivering 80 l/min at 3 bar and up to 6.5 bar maximum. Designed for larger domestic homes and light commercial properties with demanding simultaneous water use.
The Esybox sits alongside the tank — always accessible for servicing — running at an exceptionally quiet 43 dB(A). WiFi via the DConnect app and H2D technology provide remote monitoring and intelligent control, with Google Home and Alexa voice commands included. The mains connects directly via the pre-fitted ¾” ball float valve. All interconnecting pipework is supplied — no site assembly required.
The UK-manufactured tank carries an outstanding 10-year warranty and the Esybox a 3-year DAB warranty. Delivery typically 1–2 working days.
Three 80 l/min boosting systems in the 450–500L range. The WB-Advant 500 Esybox leads on value — cheapest of the three, most storage, WRAS confirmed, 6.5 bar max, WiFi and H2D, and an outstanding 10-year tank warranty. The Powertank offers Fluid Category 4 with an 8L pressure vessel. The DAB Esytank uses the same Esybox pump in the purpose-built DAB integrated system.
WB-Advant 500 Esybox — the best-value choice at £1,210 + VAT. Cheapest of the three, most storage (500L), same DAB Esybox pump as the Esytank, 6.5 bar max, 43 dB(A), WiFi and H2D, WRAS confirmed, and an outstanding 10-year tank warranty. 1–2 day delivery. The right choice for the large majority of potable water boosting applications.
Powertank SLIMLINE 450 Variable — choose for Fluid Category 4 compliance, or specifically if you need the upright slimline format. 450L, 80 l/min, 5 bar max, 8L pressure vessel, no WiFi. £1,345 + VAT.
DAB Esybox with Esytank — the same Esybox pump in the DAB-designed Esytank system (480L useable). Choose if you specifically want the DAB Esytank ecosystem — particularly to add further Esytank storage via the coupling kit. WRAS status not stated on product page. £1,380 + VAT.
How much does it cost and how quickly is it delivered?
What is the Advant tank and how does it differ from a slimline?
What is the difference between this and the WB-Advant 500 Mini3?
How does the mains connection work?
Is there a 1000L version?
What warranties are included?
Standard delivery:
Standard delivery is free on most orders. Some items may incur a delivery charge depending on weight, size or value. Any applicable charge will be displayed at checkout.
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 £16.50 + 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.
Pallet/Large/Difficult items:
Some large, heavy or difficult to transport items may incur an additional delivery charge. Please contact us for a delivery quote before ordering.
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Frequently Asked Questions
Quick answers to common questions about the WaterBoost WB – Advant 500 Esybox 2103110. 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.