The Vaillant unistor heat pump cylinder range has been designed to work in harmony with vaillant heat pumps, to provide highly efficient heating and hot water systems. unistor's large surface area and smooth coil design maximises heat transfer, to ensure connected vailllant heat pumps run at their optimum efficiency, to reduce running costs and increase hot water performance.

• "The cylinders range from 150 up to 300 litres, so They are suitable for a wide range of properties with different hot water demands, Specifically designed to work alongside Vaillant heat pumps, Unique integrated coil system ensures maximum heat transfer and helps to reduce running costs and increases hot water performance, The cylinders are made from 100 percentage recyclable stainless steel with an ultra-hard-wearing outer shell that comes with a 25 years guarantee, Available in a range of sizes from 150 to 300 litres, Pre-Plumbed versions available in 150 to 300 litres"
• 28mm three-way valve supplied Reduced cost of installation
• Unique large diameter, smooth bore integrated coil technology, provides quiet operation, ensures maximum heat transfer and helps to reduce running costs and increases hot water performance, whist reducing build-up of scale, and aids in long term efficiency through automatic descaling.
• Thermodynamically positioned sensor pocket optimises system performance.
• Supplied with expansion vessel and sensor to provide a complete system solution
• Global Warming Potential less than five and ozone depletion of zero Designed to have minimal environmental impact.
• Factory fitted immersion heater boost, and emergency backup in case of main heat source failure.