WaterBoost WB - Advant slim 1000 Esybox 2104110SL

Name: WaterBoost WB - Advant slim 1000 Esybox 2104110SL
Brand: WaterBoost
SKU: WBK1000esyboxsl
Price: 1697.28 GBP
Availability: InStock

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Established 1975
Trusted by thousands of customers

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 UK-manufactured Advant slimline tank (600mm W × 1250mm L × 1703mm 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.

At just 600mm wide, the vertical baffled slimline tank passes through a standard doorway — opening up utility rooms, plant rooms and cellars the standard 760mm Advant footprint can’t reach. 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.

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.

80l/min

@ 3 bar

1000L

Tank storage

600mm

Slim width

10yr

Tank warranty

Fits through standard doorway
WiFi · H2D · Google · Alexa
WRAS tank & pump
6.5 bar max
43 dB(A) — ultra quiet
10yr tank warranty
UK-manufactured
1–2 day delivery

Full Description

More about this product

Full Description

Product overview

The WaterBoost WB-Advant Slim 1000 Esybox is a complete, high-capacity slimline water boosting system combining a 1000-litre WRAS-approved slimline storage tank with the DAB Esybox variable speed pump. It is engineered for larger domestic properties and light commercial applications where high flow performance matters — but the standard-footprint 1000L Advant tank simply won’t fit through the access route.

At just 600mm wide, the vertical baffled slimline tank clears a standard 762mm internal doorway with room to spare — opening up utility rooms, plant rooms, cellars and garage installations that a wider tank cannot reach. Capable of delivering 80 l/min at 3 bar and up to 6.5 bar maximum, the Esybox continuously adjusts its speed to match demand — maintaining consistent pressure across multiple outlets simultaneously while using significantly less energy than fixed-speed alternatives. The external pump is mounted alongside the tank for easy access and servicing.

The tank carries a 10-year warranty and the Esybox a 3-year DAB manufacturer warranty. WiFi connectivity via the DConnect app allows remote monitoring, with H2D wireless technology, Google Home and Amazon Alexa voice control. Delivery is typically 1–2 working days.

1000^L

Tank storage

80^l/min

Flow @ 3 bar

600^mm

Slim width

43^dB

Pump noise at 1m

Tank WRAS approved · Pump WRAS approved

What’s included

DAB Esybox booster pump

Variable speed pump delivering 80 l/min at 3 bar, 6.5 bar max working pressure. Built-in inverter, WiFi (DConnect app), H2D wireless technology, Google Home, Alexa, 43 dB(A). 3-year DAB warranty. Pre-fitted with plug.

1000-litre Advant slimline storage tank

WRAS-approved 1000-litre vertical baffled slimline Advant tank — 600mm W × 1250mm L × 1703mm H. Pre-fitted with By-law 30 kit and ¾” ball float valve. UK manufactured, 100% rust-proof, 10-year tank warranty. All interconnecting PVC pipework included.

Key features

Slim tank — fits through standard doorway

At just 600mm wide, the vertical baffled slimline tank clears a standard 762mm internal doorway with 162mm to spare — opening up locations a wider Advant tank cannot reach.

1000L WRAS-approved tank

100% rust-proof, UK manufactured, 10-year warranty. Maximum storage capacity for properties with high demand or a slow-filling mains supply.

Variable speed — 80 l/min @ 3 bar

Esybox adjusts speed to match demand — constant pressure at every outlet, up to 50% energy saving over fixed-speed systems.

H2D wireless technology

Built-in H2D wireless allows a second Esybox to be paired later for duty/assist twin operation — upgrade to full redundancy without replacing the tank.

WiFi and voice control

DAB DConnect app for remote monitoring and pressure adjustment. Google Home and Amazon Alexa compatible.

43 dB(A) — exceptionally quiet

Water-cooled motor in a sound-absorbing housing. Quiet enough for garages and plant rooms close to living areas.

External pump — easy servicing

The Esybox sits alongside the tank — fully accessible for inspection, adjustment, and replacement without disturbing the tank.

Dual warranty

10-year tank warranty + 3-year DAB manufacturer pump warranty when purchased from Anglian Pumping Services.

Ready to install

Pre-fitted By-law 30 kit, ¾” ball float valve, and all tank-to-pump PVC pipework included. Minimal on-site assembly required.

Typical applications

Larger homes with narrow access

4+ bedroom properties needing 80 l/min performance where the plant room, utility, or cellar can’t take a full-width Advant tank.

Multi-bathroom properties

80 l/min supports multiple simultaneous outlets — power showers, taps and appliances running at the same time.

Retrofits & refurbishments

Replacing older cold-water storage where the standard 760mm Advant tank won’t pass modern internal doorways or corridor turns.

Water Regulations compliance

The break tank arrangement ensures full compliance where direct mains boosting is not permitted.

B&Bs and holiday lets

Reliable boosted pressure with a 1000L buffer covers peak morning demand. H2D-ready for later upgrade to twin redundancy.

Cellars, utility rooms & garage installs

Below-ground plant rooms and tight-access spaces where a wider tank simply cannot be manoeuvred into position.

Technical specifications

Esybox pump

Flow rate	80 l/min @ 3 bar
Max pressure	6.5 bar
Pump type	Variable speed — external
Noise	43 dB(A) at 1m
Connectivity	WiFi, H2D wireless, DConnect, Google, Alexa
Supply	240V, 50Hz — pre-fitted plug
WRAS	Yes
Warranty	3 years (DAB)

Storage tank

Capacity	1000 litres
Dimensions (W × L × H)	600mm × 1250mm × 1703mm
Material	WRAS-approved polyethylene
Construction	Vertical baffled, 100% rust-proof, UK manufactured
Included	By-law 30 kit, ¾” ball float valve, PVC pipework
Warranty	10 years

!The Esybox cannot connect directly to the mains. The tank must be supplied from the mains water inlet and the pump draws from the tank. In-service weight (filled) is approximately 1050kg — confirm floor loading and doorway clearance before install.

How it compares

The Slim range gives you three pump options on the same slimline 1000L tank — identical footprint and 10-year tank warranty across all three. The choice comes down to flow requirement, pump redundancy and budget.

Feature	WB-Advant Slim 1000 Mini3	WB-Advant Slim 1000 Esybox this product	WB-Advant Slim 1000 Twin
Tank width	600mm	600mm	600mm
Fits through standard doorway	Yes — 162mm clearance	Yes — 162mm clearance	Yes — 162mm clearance
Tank capacity	1000L Advant	1000L Advant	1000L Advant
Tank WRAS	Yes	Yes	Yes
Pump	DAB Esybox Mini3	DAB Esybox	2 × DAB Esybox
Flow rate	50 l/min @ 3 bar	80 l/min @ 3 bar	140 l/min @ 3 bar
Max pressure	5.5 bar	6.5 bar	6.5 bar
Noise	45 dB(A)	43 dB(A)	43 dB(A) per pump
WiFi / app	Yes — DConnect, Google, Alexa	Yes — H2D, Google, Alexa	Yes — H2D, Google, Alexa
Pump redundancy	Single pump	Single pump — H2D-ready for twin upgrade	Duty/Assist — true redundancy
Tank warranty	10 years	10 years	10 years

Which should I choose?
WB-Advant Slim 1000 Mini3 — the lower-cost slimline option. 50 l/min at 3 bar, 5.5 bar max. Choose this where 50 l/min meets your flow requirement and budget matters most.
WB-Advant Slim 1000 Esybox — the mid-range option and the most popular choice. 80 l/min at 3 bar, 6.5 bar max, ultra-quiet 43 dB(A). H2D-ready so you can add a second Esybox later for full duty/assist redundancy without replacing the tank. Choose this for multi-bathroom properties and higher simultaneous demand.
WB-Advant Slim 1000 Twin — upgrade to twin DAB Esybox pumps in Duty/Assist for 140 l/min at 3 bar and true pump redundancy from day one. Choose this for maximum flow, or where continuous supply matters (B&Bs, HMOs, light commercial).

Frequently asked questions

Will this fit through a standard doorway?

At 600mm wide, yes — a standard 762mm (30″) internal doorway gives 162mm of clearance. Always measure the narrowest point on the install route first, including any tight corners and ceiling clearance along the route. The 1703mm overall tank height is the most commonly missed dimension.

What is the difference between this and the standard WB-Advant 1000 Esybox?

Identical pump and identical performance — the only difference is the tank footprint. This slimline version measures 600mm W × 1250mm L × 1703mm H (taller and narrower); the standard WB-Advant 1000 Esybox is 760mm W × 1225mm L × 1200mm H (wider and shorter). Choose slimline for access; choose standard where ceiling height is limited.

Is 80 l/min enough for my property?

80 l/min at 3 bar suits most larger domestic properties comfortably. As a guide, a typical power shower uses around 12–15 l/min, so 80 l/min supports multiple simultaneous showers plus taps and appliances. For very high simultaneous demand or where redundancy matters, consider the WB-Advant Slim 1000 Twin (140 l/min with dual-pump backup). Contact us for sizing advice.

Can I add a second pump later?

Yes — the Esybox has DAB H2D wireless built in, meaning a second Esybox can be added and paired to run as duty/assist without replacing the tank or the original pump. This effectively upgrades the system to WB-Advant Slim 1000 Twin performance and redundancy at a later date.

Can it connect directly to the mains?

No — the Esybox cannot connect directly to the mains. The mains supply fills the tank via the pre-fitted ball float valve, and the pump draws from the tank. This ensures full compliance with Water Regulations and provides a storage buffer for peak demand periods.

How does the WiFi and voice control work?

The DAB Esybox connects to the DConnect app via built-in WiFi for remote pressure monitoring, adjustment, and fault alerts. It also integrates with Google Home and Amazon Alexa — say “Hey Google, power shower” to boost pressure, or “Hey Google, sleep mode” to quieten it at night.

Is the tank WRAS approved?

Yes — the storage tank is manufactured from WRAS-approved polyethylene and is fully compliant for potable water storage. The DAB Esybox pump is also WRAS approved for potable water use.

Can the pump be replaced independently if it fails?

Yes — the Esybox is an external pump mounted alongside the tank and can be disconnected and replaced independently. A pump fault does not require replacing the entire system.

What warranties are included?

10 years on the storage tank, and 3 years DAB manufacturer warranty on the Esybox pump — both 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 slim 1000 Esybox 2104110SL. 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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