EXCELSIOR Unvented Water Heaters

The Excelsior is a superior example of British design, innovation, and manufacture constructed from quality components. Retaining the original design ethic, Excelsior offers market-leading efficiency and performance. More Details » unventedwaterheaters.com

The EXCELSIOR i is our new range of unvented water heaters that makes use of the innovative 3S technology or Self-Sustaining air-gap System. This includes a patented device that replenishes the internal expansion in the cylinder automatically without having to service or recharge.

Click here to see a video animation of how the technology works.

Visit the resource library for a copy of the brochure.

Or visit our webshop to browse our stock of water heating spares.