400 litre stainless steel commercial water heater before palletising and wrapping

EXCELSIOR WHP

Stainless steel heat pump compatible cylinders designed for efficient hot water storage with single coil, twin coil and 28mm inlet and outlet options.

  • Heat Pump Compatible
  • Stainless Steel Cylinder
  • Single & Twin Coil Options
  • External Expansion
  • 150–500 Litre Range
  • Made in Britain
Capacity Range
150–500 Litres
System Type
Heat Pump Compatible
Coil Options
Single / Twin Coil
Expansion
External Expansion
Construction
Stainless Steel

Heat Pump Compatible Water Heating

EXCELSIOR WHP cylinders are designed for hot water systems using heat pump technology. Manufactured from stainless steel, each vessel is built with larger coil surface areas to support effective heat transfer from lower-temperature heating systems.

The range includes single coil and twin coil models, with selected 400L and 500L options available with 28mm inlet and outlet connections. This gives installers and specifiers flexibility across heat pump compatible hot water systems where coil performance, storage capacity and installation requirements need to be considered together.

Twin manifolded coil inside a heat pump inner tank

Heat Pump Dimensions

SPAR-HEAT refrigeration circuit
Size EXCELSIOR WHP Single Coil Dimensions Heat Pump Coil
Diameter (A) Height (B) Connection Position (C) Lower Connection (D) Immersion Position (E) Coil Height (F) HP Coil Surface Area
150L5751,0852252841826782m²
175L5751,2422252841827202m²
215L5751,4852252841821,0353m²
255L5751,7522252841821,0353m²
275L5751,8842252841821,0353m²
305L5752,0282252841821,0353m²
400L7501,4052623032284954m²
500L7501,6902623032284954m²

Note: Dimensions are shown in millimetres. Lettered dimensions correspond with the EXCELSIOR WHP single coil technical drawing.

Size EXCELSIOR WHP Twin Coil Dimensions Coil Surface Area
Diameter (A) Height (B) HP Coil Position (C) Solar Coil Position (D) Immersion Position (E) Lower Coil Position (F) Upper Coil Position (G) HP Coil Surface Area Solar Coil Surface Area
150L5751,0858563551821053851.5m²0.54m²
175L5751,2421,0134601822105251.5m²0.75m²
215L5751,4851,2595201822706752m²1.1m²
255L5751,7521,5275201822706752m²1.1m²
305L5752,0281,8005201822706752m²1.1m²
400L7501,4301,1966552763154803m²2m²
500L7501,7151,4816552763157204m²2m²

Note: Dimensions are shown in millimetres. Lettered dimensions correspond with the EXCELSIOR WHP twin coil technical drawing.

Model Size EXCELSIOR WHP 28mm Inlet & Outlet Options Coil Surface Area
Diameter (A) Height (B) Position (C) Position (D) Position (E) Position (F) Position (G) HP Coil Surface Area Solar Coil Surface Area
Single Coil400L7501,405262228228495N/A4m²N/A
Single Coil500L7501,690262228228495N/A4m²N/A
Twin Coil400L7501,4301,1966552763154803m²2m²
Twin Coil500L7501,7151,4816552763157204m²2m²

Note: 28mm inlet and outlet options are available on selected 400L and 500L EXCELSIOR WHP models. Other coil sizes are available on request.

Why Choose WHP Cylinders?

EXCELSIOR WHP cylinders are built for heat pump based hot water systems where effective coil performance is essential. The larger coil surface areas help support heat transfer from lower-temperature systems, making the range suitable for modern renewable heating installations.

The range gives installers a choice of single coil and twin coil models, with twin coil options allowing additional solar coil surface area where required. Selected 400L and 500L models are also available with 28mm inlet and outlet connections to support higher flow requirements.

With stainless steel construction, external expansion and capacities from 150 to 500 litres, EXCELSIOR WHP provides a practical cylinder solution for heat pump compatible domestic and commercial hot water systems.

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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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