Vented cylinders are found in more traditional properties; they will generally have an open vented or heat-only boiler. The vented hot water cylinder is crucial to providing homes with heated water for bathroom and kitchen use. If you are familiar with the term 'gravity-fed system', then you may already be aware of how a vented cylinder functions. With an external water header tank in your loft space above the cylinder, the stored water is fed via gravity and heated in the cylinder. Generally formed from copper and coated in thick insulation, vented hot water cylinders will heat your water effectively and efficiently, providing your home with long-lasting hot water for all your needs.