Water Heating

EXCELSIOR leads in British-made stainless steel water heating solutions, delivering dependable performance across domestic, commercial, industrial, marine, and bespoke applications.

High-Quality, Professional And Innovative Water Heating Cylinders And Heat Transfer Products

Explore our advanced solutions for domestic and commercial customers
Fabdec Group and Excelsior have been water heater manufacturers since 1985. We are pioneers in the water heating industry being the first company to manufacture stainless steel unvented water heaters in the U.K. and also the original innovators of the Venturi patented technology. Direct, indirect, solar, heat pump, slimline, and horizontal water heaters are among our standard range of domestic & commercial products. Our highly experienced in-house design team would be delighted to talk to you about your own bespoke design. We also offer a full range of water heater spares for our own and other OEM products. Please find some key information below or contact our helpful Sales Team today, either by Phone, Email or Live Chat.

Excelsior, part of the Fabdec Group, delivers advanced British-made water heating cylinders built for performance and longevity. Manufactured from high-grade duplex stainless steel, each vessel ensures durability and corrosion resistance.

Excelsior cylinders are available in domestic, commercial, industrial, marine, and bespoke models, designed to meet the unique requirements of every application. This versatility ensures efficient, reliable water heating for homes, businesses, factories, and specialist installations.

Available in direct and indirect models for electric, gas, heat pump, and solar systems, Excelsior cylinders meet EN.ISO 9001 standards. Supported by a 10-year warranty, Excelsior provides efficient, reliable, and sustainable water heating solutions across all sectors.

Explore Water Heating Products

200 litre stainless steel domestic water heater with immersion heater

EXCELSIOR WD

Stainless steel domestic water heaters designed for reliable hot water storage, long service life and everyday household performance.

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150 litre domestic stainless steel water heater

EXCELSIOR WXI

Stainless steel water heating cylinder with patented Venturi internal air-gap technology for reduced maintenance.

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150 litre domestic stainless steel water heater

EXCELSIOR WHP

Heat pump compatible stainless steel cylinder designed for air source and ground source heating systems.

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200 litre stainless steel buffer vessel cladded with plastisol

EXCELSIOR WB

Stainless steel buffer vessels designed to support heating system volume, stability and reliable performance.

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380 litre stainless steel commercial water palletised and ready for wrapping

EXCELSIOR WZ

Horizontal stainless steel cylinder designed for installations where height is more restricted than floor space.

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380 litre stainless steel commercial water palletised and ready for wrapping

EXCELSIOR WT

Slimline and super slimline cylinders designed and manufactured for installations where space or access is limited.

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3,000 litre stainless steel industrial water heater palletised in the Shropshire factory

EXCELSIOR WI

The EXCELSIOR external expansion stainless steel water heating cylinder for reliable commercial and industrial hot water systems.

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WXI Hi-FLO hero image

EXCELSIOR WXI

Commercial steel water heating cylinder with patented Venturi internal air-gap technology for reduced maintenance.

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340 litre stainless steel slimline commercial water heater complete in the SHropshire factory

EXCELSIOR WHP

Heat pump compatible stainless steel cylinder designed for commercial air source and ground source heating systems.

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200 litre stainless steel buffer vessel cladded with plastisol

EXCELSIOR WB

Stainless steel buffer vessels designed to support heating system volume, stability and reliable performance.

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EXCELSIOR water heating cylinder with bespoke fittings

Bespoke Water Heating

Custom stainless steel water heating and buffer vessel solutions designed around project-specific requirements.

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2,500 litre stainless steel marine water heater palletised and ready for inspection

Marine Water Heaters

Stainless steel marine water heaters designed for vessels, restricted spaces and specialist onboard hot water systems.

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380 litre stainless steel commercial water palletised and ready for wrapping

Pre-Plumb Cylinders

Pre-plumbed EXCELSIOR cylinders supplied with selected fittings and pipework to support quicker installation on site.

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Innovation and Quality in Every Vessel

EXCELSIOR’s water heating systems combine innovation and engineering excellence to deliver efficient and reliable performance. Each vessel is made in Britain from high-grade stainless steel, ensuring durability and hygiene. Furthermore, our designs improve thermal efficiency while reducing energy use. Because every installation has unique needs, EXCELSIOR offers a broad range of models meeting strict performance standards.

Whether used in homes, factories, process, or marine environments, our systems deliver consistent heat and dependable operation. Moreover, advanced production techniques ensure precision and reliability at every stage. Through continuous improvement and British expertise, EXCELSIOR’s water heating products set benchmarks for strength, sustainability, and service life, providing customers with lasting confidence and value.

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water heaters

EXCELSIOR Water Heating Projects & Insights

1,000 litre WI EXCELSIOR installed on site

When Do You Need Industrial Hot Water?

Hot water demand in industrial and commercial environments can be very different from that of a typical domestic property. Larger volumes, longer…

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Warm Homes Plan Funding: Heat Pumps

The UK’s transition towards lower-carbon home heating continues to gather pace, with government funding now supporting a growing number of heat pump…

Marine calorifier with a yacht

Marine vs Industrial Water Heaters

Marine calorifiers and industrial water heaters perform the same basic function. Both store and heat water for use across a building, facility or…

InstallerShow 2025 Hero

EXCELSIOR at InstallerSHOW 2026

EXCELSIOR Water Heating will be exhibiting at InstallerSHOW 2026, showcasing stainless steel hot water cylinders and bespoke water heating solutions.

Tailored Solutions for Every Industry

Every environment demands a specific approach to water heating, and EXCELSIOR’s tailored solutions ensure efficient performance. From domestic buildings to industrial facilities, each product is designed for practical installation and thermal efficiency. Additionally, our marine and bespoke systems suit challenging spaces where configuration matters. Because all manufacturing occurs in the UK, customers benefit from consistent quality and short lead times.

Our engineers collaborate closely with clients to refine designs that align with operational and spatial needs. As a result, each vessel offers dependable performance while minimising maintenance. Ultimately, EXCELSIOR delivers more than equipment, it provides confidence through precision engineering and effective water heating solutions built for every sector.

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Not sure which cylinder is right for your application?

Explore our FAQs for answers to common questions about water heating cylinder types, applications and specification requirements.

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CONTACT US
If you’re looking to reduce operating costs, improve hygiene, and enhance sustainability, reaching out to Fabdec Group is a smart strategic move. Based in Ellesmere, Shropshire—and with an additional European office in Gelsenkirchen, Germany—Fabdec is recognised as a pioneer in stainless-steel thermal solutions, backed by over 60 years of engineering excellence. We design, manufacture and supply an extensive portfolio including energy-efficient milk cooling systems, stainless-steel unvented water heaters, heat recovery units, process vessels, and integrated skid-set systems tailored to dairy, food processing, renewables and HVAC applications. Whether your needs involve bespoke stainless-steel vessels for process engineering, dairy systems to optimise milk handling, or heat recovery solutions to reduce energy consumption, contacting Fabdec via their website or live chat ensures you’re speaking directly with a responsive, customer-focused team committed to high quality and innovation.

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