WaterBoost – Advant
WaterBoost WB – Advant 500 Mini3 2103210
- Established 1975
- Trusted by thousands of customers
The WaterBoost WB-Advant 500 Mini3 is a complete variable-speed boosting system designed for larger domestic and light commercial properties. A 500-litre WRAS-approved Advant tank (650mm W × 870mm L × 1200mm H) pairs with the DAB Esybox Mini3 external variable speed pump, delivering 50 l/min at 3 bar with WiFi, DConnect app, Google Home and Alexa voice control.
The Esybox Mini3 sits alongside the tank for easy access at all times, running at a quiet 45 dB(A). The tank connects directly to the mains via the pre-fitted ¾” ball float valve. All interconnecting pipework is included — no site assembly required. The Advant tank format is ideal for garages and plant rooms.
The tank carries an outstanding 10-year warranty and the DAB Esybox Mini3 pump a 3-year warranty. Delivery is typically 1–2 working days.
WRAS tank & pump
10yr tank warranty
Variable speed
1–2 day delivery
Direct mains
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More about this product
The WaterBoost WB-Advant 500 Mini3 is designed for larger domestic properties and light commercial applications where a generous storage tank and high-quality variable-speed performance are required. A 500-litre WRAS-approved Advant tank (650mm W × 870mm L × 1200mm H) pairs with the DAB Esybox Mini3 external variable speed pump, delivering 50 l/min at 3 bar and up to 5.5 bar maximum.
The Esybox Mini3 sits alongside the tank — always accessible for inspection and maintenance — running at a quiet 45 dB(A). WiFi via the DConnect app provides remote monitoring and pressure control, with Google Home and Amazon Alexa voice control included. The mains connects directly via the pre-fitted ¾” ball float valve. All interconnecting pipework is supplied — no site assembly required.
The Advant tank format is ideal for garages and plant rooms. The tank carries an outstanding 10-year warranty and the Esybox Mini3 a 3-year DAB warranty. Delivery typically 1–2 working days.
Three systems in the 450–500L range. The WB-Advant 500 Mini3 offers the best combination of value, features, and warranty — 500L WRAS-confirmed storage, 50 l/min variable speed, WiFi, and an outstanding 10-year tank warranty at the mid-range price. The Powertank offers Fluid Category 4. The DAB Esytank 500 is the same Esybox Mini3 pump in the DAB-designed integrated system with 480L useable storage.
WB-Advant 500 Mini3 — the outstanding choice at £896 + VAT. More storage than the Powertank (500L vs 450L), higher flow (50 vs 40 l/min), variable speed, WiFi and voice control, WRAS confirmed, and an unmatched 10-year tank warranty. Significantly cheaper than the DAB Esytank 500 with identical pump performance. The right choice for the large majority of potable water applications.
Powertank SLIMLINE 450 Fixed — choose only for Fluid Category 4 compliance, or if the upright slimline format specifically suits your installation. 450L, 40 l/min. £818.55 + VAT.
DAB Esytank 500 with Esybox Mini3 — same Esybox Mini3 pump with 480L useable storage in the DAB integrated Esytank system. Choose if you specifically want the DAB Esytank ecosystem — for example, to expand capacity using the DAB coupling kit. WRAS not stated on product page. At £1,051 + VAT it is £155 more than the WB-Advant 500 Mini3.
How much does it cost and how quickly is it delivered?
What is the Advant tank and how does it differ from a slimline tank?
What is the difference between this and the WB-Advant 500 Esybox?
How does the mains connection work?
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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Related products
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Frequently Asked Questions
Quick answers to common questions about the WaterBoost WB – Advant 500 Mini3 2103210. 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.