Direct unvented cylinders are great for homes that are looking to maximise their hot water supply. These cylinders provide pressured hot water, guaranteeing a high flow rate. Whilst we mainly install thermal stores, we have qualified direct unvented installers for customers that would prefer a direct unvented unit. 

Direct Unvented Cylinders - What are they?

A direct unvented cylinder is a water heating system that provides mains pressure hot water direct from the tank. This cylinder is perfect for homes that desire an optimum flow of hot water.

Fischer direct unvented cylinder’s are slimline and are also free from a cold water storage tank, which is ideal for homes that have limited space to fit a traditional gravity fed water heating system.  A direct unvented cylinder comes with an expansion vessel that helps to reduce the water level in the main tank as hot water rises. They are also equipped with safety features such as a pressure reducing valves (PRV) to ensure the direct unvented water heater works as efficiently as possible.

The direct unvented cylinder requires annual servicing for the guarantee to remain valid. Once the unit is installed, the installation team will fill in a ‘Benchmark Book’ and leave it with you after the installation. This will state that the unit has been installed into the property by a fully commissioned heating engineer. Each year, the benchmark book must be signed by a trained plumber after servicing, therefore ensuring the water heater’s 25 year guarantee to remains valid.

Your direct unvented cylinder will be installed with a immersion timer. This allows you to program the immersion elements to start heating the tank at specified times during the day / night. Thanks to the foam injected insulation, the heated water can last approximately 24 hours. For the timer to work efficiently, the cylinder must be correctly sized to your homes water heating requirements. This will be established during our free no obligations survey.

Fischer direct unvented cylinder are complemented with a 25 year guarantee, with 1 year on electrical components.

Need help? Call us now on freephone 0800 103 2723.