WaterBoost WB - Advant 500 Esybox Twin 2103410

Name: WaterBoost WB - Advant 500 Esybox Twin 2103410
Brand: WaterBoost
SKU: WBK500twin
Price: 2773.2 GBP
Availability: InStock

WaterBoost WB - Advant 500 Esybox Twin 2103410 - Image 3

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Established 1975
Trusted by thousands of customers

The WaterBoost WB-Advant 500 Esybox Twin brings dual-pump redundancy to the compact end of the WaterBoost range — ideal where continuous water supply matters but a full 1000L footprint isn’t needed. A 500-litre WRAS-approved UK-manufactured Advant tank (650mm W × 870mm L × 1200mm H) pairs with two DAB Esybox pumps in a coordinated twin configuration, delivering 140 l/min at 3 bar and up to 6.5 bar maximum.

The two Esybox pumps communicate wirelessly via H2D technology — automatically balancing load and enabling true duty/standby operation. If one pump requires servicing, the other continues to run without interruption. Both pumps include WiFi via DConnect, Google Home and Alexa voice control, running at 43 dB(A) each. All interconnecting pipework included — no site assembly required.

The UK-manufactured tank carries an outstanding 10-year warranty and each DAB Esybox a 3-year warranty. Delivery is typically 1–2 working days.

140l/min

@ 3 bar

500L

Tank storage

6.5bar

Max pressure

10yr

Tank warranty

WiFi · H2D · Google · Alexa
WRAS tank & pumps
Dual pump redundancy
10yr tank warranty
UK-manufactured
1–2 day delivery

Full Description

More about this product

Full Description

Product overview

The WaterBoost WB-Advant 500 Esybox Twin brings dual-pump redundancy to the compact end of the WaterBoost range — for properties that need supply continuity without the footprint of a 1000L system. A 500-litre WRAS-approved UK-manufactured Advant tank (650mm W × 870mm L × 1200mm H) pairs with two DAB Esybox pumps in a coordinated twin configuration, delivering 140 l/min at 3 bar and up to 6.5 bar maximum.

The two Esybox pumps communicate wirelessly via H2D technology — automatically balancing load without additional wiring and enabling true duty/standby operation. If one pump requires servicing, the other continues to run without interruption. Both pumps include WiFi via the DConnect app, Google Home and Alexa voice control, running at a quiet 43 dB(A) each. All interconnecting PVC pipework included. No site assembly required.

The UK-manufactured tank carries an outstanding 10-year warranty and each DAB Esybox a 3-year warranty. Delivery typically 1–2 working days.

140^l/min

Flow @ 3 bar

500^L

Tank storage

6.5^bar

Max pressure

43^dB

Noise each pump

WRAS · 10yr tank · Dual pump redundancy · H2D

What’s included

Two DAB Esybox pumps

Two external variable speed Esybox pumps linked via H2D — 80 l/min each (140 l/min combined), 6.5 bar max, 43 dB(A) each. WiFi/DConnect/Google/Alexa on each. True duty/standby via H2D. 3-year DAB warranty per pump.

500L Advant tank

WRAS-approved 500-litre UK-manufactured Advant tank — 650mm W × 870mm L × 1200mm H. Pre-fitted ¾” ball float valve, By-law 30 kit, all interconnecting PVC pipework. 100% rust-proof. 10-year warranty.

Key features

140 l/min @ 3 bar — twin Esybox

Two DAB Esybox pumps deliver a combined 140 l/min — outstanding output for a compact 500L footprint, matching the flow of much larger single-pump systems.

True duty/standby redundancy

H2D links both Esybox pumps wirelessly — if one is taken offline for servicing, the other continues to supply the property without interruption.

WiFi, H2D, Google and Alexa

Both Esybox pumps connect via DConnect app and H2D — remote monitoring, intelligent load balancing, and full voice control via Google Home and Alexa.

10-year tank warranty

UK-manufactured WRAS-approved 500L Advant tank — 100% rust-proof with an outstanding 10-year warranty as standard.

43 dB(A) — exceptionally quiet

Each Esybox runs at 43 dB(A) — an outstanding noise level for an 80 l/min pump. Even with two pumps operating simultaneously, the system remains very quiet.

6.5 bar maximum pressure

6.5 bar maximum from each Esybox — supports demanding hot water systems and high-pressure applications despite the compact tank size.

WRAS approved — potable water

Both the tank and both Esybox pumps carry WRAS approval — fully compliant for potable drinking water use in the UK.

All pipework included

Supplied complete with By-law 30 kit, ¾” ball float valve, and all interconnecting PVC pipework — ready to install on delivery.

1–2 day delivery

Delivery typically 1–2 working days. Contact us via WhatsApp or phone to confirm availability before ordering.

Typical applications

High-demand homes with limited plant space

Properties with several bathrooms and multiple appliances running simultaneously, where a compact 500L footprint is needed but flow can’t be compromised.

Light commercial and hospitality

B&Bs, small hotels, holiday lets, offices — where water supply continuity is critical and a single-pump failure cannot be allowed to interrupt service.

Where uninterrupted supply is essential

H2D duty/standby means one pump services the property while the other is maintained or awaits deployment — no downtime, no interruption.

Remote monitoring applications

WiFi, DConnect, H2D, Google Home and Alexa — manage and monitor both pumps remotely, essential for commercial properties or managed rentals.

Space-constrained plant rooms

650mm W × 870mm L × 1200mm H footprint delivers twin-pump redundancy in a similar space to a single-pump 500L system.

Upgrading from a single-pump system

Where an existing single Esybox has proven undersized or unreliable and redundancy is now a priority, without moving up to a 1000L tank.

Technical specifications

DAB Esybox Twin pump set (×2)

Combined flow	140 l/min @ 3 bar
Max pressure (each)	6.5 bar
Pump type	Variable speed — external (×2)
Noise (each)	43 dB(A) at 1m
Connectivity	WiFi · DConnect · H2D · Google · Alexa
Operation modes	Duty/standby or dual independent duty
WRAS	Yes (both pumps)
Warranty	3 years each (DAB)

Advant tank

Capacity	500 litres
Dimensions (W × L × H)	650mm × 870mm × 1200mm
Mains inlet	Direct — ¾” BSP ball float valve
WRAS	Yes — WRAS-approved material
Origin	UK manufactured
Min inlet pressure	0.5 bar recommended
Warranty	10 years

How it compares

The WB-Advant 500 Esybox Twin sits alongside the single-pump WB-Advant 500 Esybox and the larger WB-Advant 1000 Esybox Twin. It roughly matches the 1000 Twin’s flow and pressure in a smaller, lower-cost tank — the trade-off is a shorter overnight buffer. Against the single-pump 500, it adds redundancy and near-double the flow for a higher price. Pricing for this SKU and the single 500 Esybox is not yet set — placeholders below need confirming before this goes live.

Feature	WB-Advant 500 Twin this product	WB-Advant 500 Esybox	WB-Advant 1000 Esybox Twin
Tank storage	500L WRAS Advant	500L WRAS Advant	1000L WRAS Advant
Pump configuration	Twin Esybox — external (×2)	Single Esybox — external	Twin Esybox — external (×2)
Flow @ 3 bar	140 l/min	80 l/min	140 l/min
Max pressure	6.5 bar	6.5 bar	6.5 bar
Redundancy	Yes — H2D duty/standby	No (single pump)	Yes — H2D duty/standby
Dimensions (W×L×H)	650×870×1200mm	650×870×1200mm	760×1350×1300mm
Tank warranty	10 years	10 years	10 years
Pump warranty	3 years each (DAB)	3 years (DAB)	3 years each (DAB)
Price (ex VAT)	[PRICE TBC]	[PRICE TBC]	£2,461.00

Which should I choose?
WB-Advant 500 Esybox Twin — the best choice for redundant, high-flow potable water boosting in a compact footprint. 140 l/min, 6.5 bar max, true H2D duty/standby, WiFi and voice control, 43 dB(A), named 10-year tank and 3-year pump warranties. 1–2 day delivery. Right where supply continuity matters but a 1000L tank isn’t practical.
WB-Advant 500 Esybox — choose where a single pump is acceptable and budget is the priority. Same tank and footprint, 80 l/min, but no redundancy and no H2D.
WB-Advant 1000 Esybox Twin — choose where overnight buffer capacity matters as much as flow, or where a larger household/commercial demand profile needs the extra 500L of storage.

Frequently asked questions

How much does it cost and how quickly is it delivered?

[PRICE TBC] + VAT. Delivery is typically 1–2 working days. Contact us via WhatsApp or phone to confirm availability before ordering.

How does the duty/standby redundancy work?

The two Esybox pumps are connected wirelessly via H2D (Hydraulic to Digital) technology — no wiring between the pumps is needed. In duty/standby mode, one pump handles demand while the other is on standby ready to take over immediately if the duty pump is taken offline or develops a fault. The pumps can also be configured as two independent duty pumps serving separate circuits. Switchover is automatic and seamless.

What is the difference between this and the WB-Advant 500 Esybox (single pump)?

The WB-Advant 500 Esybox uses the same 500L Advant tank with one Esybox pump — 80 l/min, 6.5 bar max, WiFi. The Twin uses two Esybox pumps — 140 l/min combined, 6.5 bar max, H2D duty/standby redundancy, dual WiFi. Choose the single Esybox for high-demand domestic use where a single pump is acceptable; choose the Twin where supply continuity or 140 l/min peak flow are requirements.

Should I choose this or the WB-Advant 1000 Esybox Twin?

Both use the same twin Esybox pump set — 140 l/min combined, 6.5 bar max, identical redundancy. The difference is purely storage: 500L vs 1000L. Choose the 500 Twin where plant room space is limited or overnight buffer requirements are modest; choose the 1000 Twin where mains restriction is severe or peak simultaneous demand runs for longer periods.

What warranties are included?

10 years on the WRAS Advant tank and 3 years DAB warranty on each Esybox pump, when purchased from Anglian Pumping Services.

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Delivery Information

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 Twin 2103410. 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.

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