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A water dispenser comparison: the E4 vs B4

At Borg & Overström, we have achieved a world-wide presence through design-led manufacturing, utilising the latest in technological advancements to make innovative and intelligent designs possible.

Combining energy-efficiency with powerful performance, the E4 stands as our next evolution in water dispensing technology. Evolving the way you drink, the E4 introduces a host of new benefits and key features.

In this article, we take an in-depth look at the latest E4 water dispenser, highlighting the key differences from its predecessor – the B4 – and reveal the new technological advancements, including:

Advanced water dispensing technology

Comparing the key features

Joining the evolved era of models, the E4 seamlessly merges cutting-edge connectivity with a strong focus on environmental sustainability. Progressing from its predecessor – the B4 – the technology at the heart of the E4 not only builds upon established features, but also introduces the next-level in evolved and intelligent water dispensing.

Offering a range of innovative features, tailored to provide you with the best possible drinking water experience, the E4 keeps all the benefits of the B4 and takes exclusive upgrades from modern innovations and environmentally-friendly technologies.

Key features B4 E4
Totality® ✔️ ✔️
Viovandt® (optional) ✔️ ✔️
Sterizen® ✔️ ✔️
Fynil® ✔️ ✔️
ProCore® ✖️ ✔️
DryChill® ✖️ ✔️
Biomaster ✖️ ✔️
Bluetooth connectivity ✖️ ✔️

Comparing performance

We have worked hard to harmonise powerful performance with energy-efficiency. The E4 utilises our unique ProCore® and DryChill® technology, and so it should come as no surprise that the E4 delivers a much more powerful performance than the older B4 model. 

Dispenses litres-per-hour (L/h) B4 E4
Chilled, ambient & sparkling 35 L/h 50 L/h
Hot 6 L/h 15 L/h

The E4 delivers 50 litres-per-hour (L/h) on the dispensing front, firmly bypassing the B4’s peak of 35 L/h, with no extra wasted energy. 

Comparing dispense height

Dispense height is the measurement between the bottom of the tap (dispense outlet) and the top of the drip tray.

The E4 once again builds on the design of the B4, excelling in ergonomic versatility, and is capable of filling a wide array of containers ranging from your standard cups and glasses, to mugs, water bottles, jugs, and carafes. 


Both countertop units share the same overall height of 415mm, however, the new E4 does slightly surpass the B4 with a higher dispense height.

The E4 features a dispense height of 290mm vs the B4’s 270mm: an increase of 20mm.

Efficient ProCore® modular design

The E4 ushers in a new, evolved, design era in the E-Series. Combining energy-efficiency with powerful performance, the E4 utilises the latest in eco-friendly technology and is powered by our unique ProCore® system.


Built for power and sustainability, this compact processor has a low global warming potential (GWP) and next-generation sustainability features. Its unique design optimises chilling and recovery time, whilst also being discreet and energy-efficient.


One of the biggest advantages of our exclusive ProCore® system, is that all Borg & Overström water dispensers and tap systems are equipped with ProCore® technology.

The ProCore® modular design provides a unique versatility, for the ‘core’ technology will remain consistent across all of your Borg & Overström water dispenser and tap system. This evolved design offers an unparalleled adaptability, allowing for an easy transition between any Borg & Overström model, and additional efficiency in servicing and part replacements.

Rapid DryChill® coolant technology

Taking the next-step in advanced hygiene and cooling technology, the E4 utilises our unique innovation – DryChill®.
Watch the DryChill® technology in action

Consisting of a compact aluminium block, and requiring no water to be kept in a tank, DryChill® technology greatly reduces the risk of water stagnation, bacteria build-up and water leakage.

Providing both advanced cooling speeds and temperatures with eco-refrigerant gas, DryChill® offers sustainably superior cooling to ensure the water you drink is safely chilled, great-tasting and refreshing.

Antimicrobial protection with Fynil® and Biomaster

Fynil® is a durable, scratch and impact resistant finish that allows for easy-cleaning, reduced limescale build-up and increased longevity.

Featured on the evolved E4, this premium finish utilises Biomaster antimicrobial and silver iron technology to reduce the transfer of germs, providing complete hygiene assurance in communal areas.

Bluetooth® connectivity and touchless technology

Building on the technology of the B4, the new E4 brings Bluetooth® technology to you as standard. With advanced options for customisation, you can connect your phone to your device for hands-free dispensing, or add SensorBeam technology as an accessory for the ultimate convenience:

SensorBeam™ technology

SensorBeam technology is the latest in touch-free dispensing. Pair your E4 with a SensorBeam base cabinet that illuminates the dispense options using projection mapping for complete touch-free dispensing.


Bluetooth alarmed waste kit

Alarmed Waste Kit B6 and T3 Cabinet Render

The Bluetooth alarmed waste kit offers an integrated overflow prevention kit, for complete maintenance control. Featuring an audible alarm that will alert at high water levels, the Bluetooth® functionality deactivates the control panel, preventing tank overflow.

Superior sustainability

Committed to being a proactive and sustainable business, the new E-Series, of which includes the E4, is a part of our new era that utilises eco-friendly technology and prioritises powerful performance, energy-efficiency and sustainability.

Designed and built in the UK in our zero-to-landfill facility, the E4 benefits from a reduced carbon footprint and nearshored supply chain. Utilising our unique modular ProCore® technology, the E4 combines energy-efficient technologies with eco-refrigerant cooling and recyclable components, for a sustainable new approach to filtered water.


Moving towards a sustainable future, the E4 is nearshore manufactured with all components being sourced from within Europe. This not only reduces the carbon footprint of each dispenser but also provides a more stable and agile supply chain, helping us to fulfil orders promptly and with fewer interruptions. 


To learn more about our sustainable practices – visit our sustainability hub – and discover how you can minimise your reliance on single-use plastics.

Comparing water dispense options


With the E4, you have the flexibility to choose your preferred drink from a range of dispense options, whether it’s a chilled glass of sparkling or a hot cup of tea, the E4 offers the same 3-way dispensing versatility as the popular B4, providing you with complete consumer convenience.

Water dispense options B4 E4
Chilled & ambient ✔️ ✔️
Chilled, sparkling & ambient ✔️ ✔️
Chilled, ambient & hot ✔️ ✔️
Chilled, sparkling & hot ✔️ ✔️
Chilled, sparkling, ambient & hot ✖️ ✖️

An evolution in drinking water



At Borg & Overström, we are embarking on a new design era that prioritises increased sustainability and progressive performance. 

The E4 is one of our latest technological advancements in premium filtered water dispensing and represents a distinct change in the evolution of technology. 

With our exclusive modular ProCore® system, the E4 harmonises powerful performance and energy-efficiency in a compact design, outperforming its predecessor – the B4 – and other older models.

Want to learn more about the E-Series? Download your own E-Series booklet for the latest information and explore all the NEW evolved features and tailored solutions.



Be the first to experience the future of water dispensing with an exclusive, virtual showroom demonstration.

Book your virtual showroom visit now!

We specialise in helping customers find their ideal fit, so if you have any further questions or inquiries – contact us –  our expert staff are ready and waiting to help you.

Our drinking water dispensers are available through selected partners