Best Hot Water Cylinders for Commercial Buildings

Selecting the right hot water cylinder for a commercial building demands a different set of criteria to domestic specification. Capacity, recovery speed, energy efficiency, build quality, heat source compatibility, and the availability of long-term service and warranty support all carry significantly greater weight when specifying for a commercial building.

What to look for in a commercial hot water cylinder

  • High-capacity range — commercial sites typically require cylinders from 300 litres upwards, with some large applications demanding 1,000 litres or more in a single vessel or bank of cylinders.
  • Stainless steel construction — stainless steel resists corrosion, limescale accumulation, and bacterial growth far more effectively than copper, and is essential for long service life in high-demand environments.
  • Heat source flexibility — the best commercial cylinder manufacturers offer models compatible with gas boilers, oil boilers, electric heating, heat pumps, and solar thermal systems.
  • Legionella compliance — commercial systems must be designed to reach and maintain minimum 60°C storage temperatures in accordance with HSG274 guidance on Legionella prevention.
  • Warranty and service infrastructure — for commercial operators, a manufacturer’s warranty of at least 10 years and access to a national service and spares network is essential.

OSO Hotwater: a leading commercial hot water cylinder manufacturer in the UK

OSO Hotwater is the world’s largest manufacturer of stainless steel unvented hot water cylinders, with over 90 years of manufacturing heritage from its factory in Hokksund, Norway. In the UK commercial market, OSO’s Maxi range provides a complete solution for buildings with demanding hot water requirements.

Every OSO commercial cylinder is manufactured from stainless steel using the company’s ULTRAWELD process, achieves low standing heat loss figures to reduce operational energy costs, and carries a 10-year manufacturer’s warranty. OSO’s UK operation provides CPD-accredited technical presentations for specifiers, a dedicated commercial sizing consultancy, and a nationwide network of approved certified installers.

Learn more about OSO’s hot water cylinders here

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Over 85 years OSO Hotwater has earned the trust from suppliers, co-workers and customers. We are still going to earn, and manage, this trust in an exceptionally good way, and value the opinion of our partners.

Our guiding targets:

  1. Safe products, manufactured by safe processes
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  4. Cost- and energy efficient processes

OSO Hotwater AS

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