WH Cylinders manufacture a full range of KIWA and G3 compliant unvented domestic hot water cylinders in our purpose built facility in Manchester England. Years of experience and knowledge goes in to every single product we produce ensuring only the highest quality products reach our customers.

Our standard unvented cylinders operate at a working pressure of 3 bar gauge however we can manufacture unvented hot water cylinders for higher working pressures of 4 bar, 5 bar, 6 bar or higher if required.

To view more information on each of our products please select from the table below.

Stainless SuperFlow

World Heat Unvented Cylinder

Twin Coil SuperFlow

Twin Coil Unvented Cylinder

ClimaCyl Heat Pump

Unvented Heat Pump Cylinder

EcoSlim Unvented

World Heat Unvented Cylinder

Ultra Slim Unvented

World Heat Unvented Cylinder

Unvented Components



Packaged Cylinders2

Horizontal Unvented

Horizontal Unvented Cylinders2