OSO Hotwater makes stainless steel water heaters covering most hot water demands, from a single flat through to schools, factories, sports centres and hospitals. The range here runs from 30 to 300 litres, direct and indirect.
Two things separate OSO from most of the market: the larger cylinders arrive partly pre-plumbed with internal expansion space, which cuts installation time and cost, and the Super Xpress range uses OSO's Vacuum Insulation Panel technology to hold standing losses down.
Every product below carries its installation and maintenance details and the manufacturer's specification on the page. Our advice centre compares how OSO stacks up against other cylinders, or call the team on 01934 253600.
OSO Super Coil
OSO's indirect range, heated by a boiler through a coil. Internal expansion and partial pre-plumbing keep the plumber's time on site down, and these are among the shortest vertical units available, which matters where head height is tight.
Available from 120 to 250 litres. The 120 and 150 litre models are ErP B rated, the best in this range, and stand comparison with the Megaflo and most other brands on performance and build.
OSO Super Xpress
The direct, electrically heated range, with 3kW elements and the same internal expansion and pre-plumbing as the Super Coil, so it is among the quickest cylinders on the market to install.
Available from 120 to 300 litres, and insulated with OSO's award-winning Vacuum Insulation Panel technology to reduce heat loss and running cost.
OSO Multipoint
The compact end of the range, for a single flat, an office kitchen or anywhere a full cylinder would be too much. 3kW elements across 30, 50, 80 and 100 litre capacities, all ErP C rated.
Same stainless steel construction as the larger cylinders, in a wall-mounted body.
