The Vaillant uniSTOR Unvented Hot Water Storage Cylinder is an efficient and space-saving solution for modern heating systems. Ideal for upgrading from a traditional open vented system with a loft cold water tank, it allows you to switch to a sealed system, freeing up space while delivering improved water pressure throughout your home. Replacing an older copper cylinder with a uniSTOR unvented cylinder can significantly reduce heat loss, helping to improve overall system efficiency and lower energy bills. Manufactured from high-grade duplex stainless steel, the uniSTOR cylinder is built for durability and long-term performance. Its high-performance insulation, made from environmentally friendly materials, helps retain heat for longer—reducing energy consumption and improving efficiency.

Key Features :

• Suitable for converting from open vented to sealed systems
• Provides improved water pressure and consistent performance
• Made from high-grade duplex stainless steel for durability
• Highly insulated with eco-friendly materials to reduce heat loss
• Easy-to-clean outer casing
• Helps reduce energy usage and fuel costs
• 2-year parts and labour guarantee
• 25-year cylinder warranty