Mains-pressurised hot water cylinders supplied and fitted by qualified engineers.
Unvented Cylinders are a Mains Pressurised Hot Water Cylinder that allows your Hot Water to be pumped to your Tap and Shower outlets at High Pressures. The increase in pressure produces much higher Flow Rates - higher Flow Rates than even your largest Combi boilers can produce.
Other benefits of these Unvented Cylinders are the fact you don't need to fit the Cylinder above the water outlets (i.e. Baths and Showers) - they can be fitted anywhere in the house and still get the desired results.
You can produce up to 72 litres per minute with some of the ranges of Unvented Cylinders, which is ideal for a large property with multiple outlets.
Indirect Unvented Cylinders can recover a lot quicker than a vented hot water cylinder due to the use of Duplex Stainless Steel to make the cylinders. This allows them to recover from a 70% draw-off within approximately 30 minutes on a 300L cylinder, and on lower capacities between 15 - 20 minutes (guidance figures only).
Direct Unvented Hot Water Cylinders take a lot longer to recover, due to having no coil inside and using only Immersion Heaters to heat the water. This makes them less efficient - around 120 minutes to recover on lower capacities, and up to 263 minutes for the 300L versions (guidance figures only).
The main advantage of Unvented Cylinders / Mains Pressurised Cylinders is their ability to deliver consistent, high flow rates of hot water to all outlets at the same time - the kind of pressure most modern households now expect.
Installation of an unvented system requires specific qualifications - it's not work that can be done by any plumber. We're fully qualified and certified to install unvented systems, and we cover everything from the cylinder itself through to the controls, expansion vessel and safety devices.
Free quotes on all work. 2 year parts and labour guarantee.
