OSO Commercial Water Heaters
OSO have several ranges of commercial and industrial sized calorifiers (hot water storage cylinders) available to special order.
Calorifiers are available for indirect heating from a separate heat source, direct heating from immersion heater, or a combination of the two. Fast recovery rates from 30 minutes are available.
With the increasing popularity of renewable energy, commercial water storage makes more sense than ever before, allowing businesses to harness free solar power or energy from ground or air source heat pumps. Cylinders are available from 500 litres up to 10,000 litres, manufacturing from stainless steel or copper lined steel. All cylinders are supplied fully insulated and cased.
OSO commercial units are manufactured to individual specification, allowing each unit to be crafted to exactly match the customer’s requirements.
Please click on the icons below to access the web pages for the different product ranges.
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17 Series ![]() Bespoke calorifiers from 500 – 10,000 litres. Stainless steel or copper lined steel construction. |
18 Series ![]() Water-jacketed calorifiers from 500 – 10,000 litres, perfect for hard water areas. Stainless steel or copper lined steel construction. |
21 Series ![]() Water-jacketed calorifiers from 500 – 10,000 litres with additional coil for fast heating times, perfect for hard water areas. Copper lined steel construction. |


