Vaillant uniSTOR 250 Unvented Hot Water Cylinder

The Vaillant uniSTOR 250 unvented hot water storage cylinder is suitable when converting from an open vented system (with a cold water tank in the loft) to a sealed system (boiler and cylinder) saving space and increasing water pressure. Upgrading an old copper cylinder to a new uniSTOR unvented cylinder as part of a heating system upgrade will reduce cylinder heat losses, improving your heating system's efficiency and lowering your fuel bills. 250 litre capacity Made from high grade, long-lasting duplex stainless steel Highly insulated with environmentally friendly materials Aesthetically pleasing, easy-to-clean outer casing 2 year parts and labour guarantee 25 year cylinder guarantee