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.
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Vented systems are known as ‘gravity fed hot water systems’. Vented hot water cylinders (also called open-vented cylinders) need to be supplied by a large tank of cold water which is kept in the loft. The natural pull of gravity carries this water via a vent pipe down to the hot water cylinder which heats the water. Vented cylinders rely on gravity and the height of the cold water tank dictates the pressure. This means that the cold water tank should be placed in the loft. As the water is heated it expands, but the presence of the vent pipe and tank in the loft provides an escape route for the excess. If you are looking to install a hot water cylinder in a loft or a place with limited head space, a horizontal vented cylinder may be a more suitable solution. For more detailed information on vented cylinders, click here.