OSO Stainless Steel hot water cylinders are possibly the highest quality unvented cylinders available in the UK, made by one of Scandinavia's largest and most successful water heater manufacturers.

Stainless steel is the material of choice for hot water plumbing. The combination of heat and water corrodes lesser materials such as mild steel and copper, and - particularly in areas with acidic water - copper cylinders will fail in 10 years or less. OSO use only Super Molybdenum Stainless Steel, ensuring faultless corrosion-resistant performance and allowing us to offer a 25-year guarantee on every cylinder we supply.

The second major OSO advantage is the ability to offer hot water at mains pressure. This type of unvented hot water system allows taps and showers to provide full mains-pressure water flow rates without the need for a secondary pump, thus reducing the system's electrical demand and avoiding future maintenance problems. 


DELIVERY IS NORMALLY 5/7 WORKING DAYS.

Please note prices in drop down below exclude VAT.