Ultra-quiet operation, small footprint and total flexibility of siting (with top and rear flue options). Automatic purging assistance and high specification aluminium heat exchanger, makes for a lightweight installation. High quality and high efficiency, together with the complete availability of spare parts, mean the ecoFIT Pure is easy to maintain. Compatible with Vaillant intelligent controls, for a convenient and energy efficient system. Max. Central Heating Output: 26.5kW Aluminium Heat Exchanger Top or Rear Flue Outlet Compatible with the Unistor Range of Cylinders Compatible with Solar Panels 2 Year Manufacturers Guarantee (Registration Required, T&Cs Apply) 86,664BTU Digital Display Max. Central Heating Output: 26.5kW Aluminium Heat Exchanger Top or Rear Flue Outlet Compatible with the Unistor Range of Cylinders Compatible with Solar Panels 2 Year Manufacturers Guarantee (Registration Required, T&Cs Apply) 86,664BTU Digital Display