The Vaillant 250 Litre uniSTOR Heat Pump Cylinder is a high-capacity, efficient hot water storage solution designed specifically to complement Vaillant heat pump systems. It features advanced thermal injected polyurethane insulation combined with vacuum panels to minimize heat loss and improve energy savings. Constructed from 100% recyclable stainless steel with a durable outer shell, it delivers reliable, eco-friendly hot water performance for medium to large domestic use.
Key Features:
Enhanced Heat Transfer & Large Coil: Equipped with a large-diameter smooth coil that maximises heat transfer efficiency, compatible with a wide range of heat pump systems including ground source heat pumps, which helps reduce running costs.
Superior Thermal Insulation: Utilizes thermal injected insulation combined with vacuum panels, achieving very low standby heat loss (around 1.4 kWh/24h), improving energy efficiency and maintaining hot water temperature for longer.
Complete System Integration & Backup: Comes with an integrated 25-litre expansion vessel, thermodynamically positioned sensor pocket for optimal system performance, and a factory-fitted immersion heater providing emergency backup if the main heat source fails.