The Vaillant uniSTOR 200 unvented hot water storage cylinder can be used when converting from an open vented system with a cold water tank in the loft to a sealed boiler and cylinder system saving space and improving 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, making your heating system more efficient and saving money on your fuel bills.

• 200 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