RM Cylinders Optimum

Our Standard/Slimline Optimum Cylinder range is the mainstay of the Joule Catalogue, available in 3 different configurations and with seven different sizes, there is a cylinder to suit almost any situation. As with all our Unvented units. they are supplied with our 25-year vessel guarantee.

Further extending our offering of space-saving cylinders the Horizontal Unvented range allows installation in the loft space and other areas of the property with low headroom. Again using the same feature set of the Standard range the Horizontal units are unbeatable offering from Joule.