- Self-contained unit, only requiring water & electric connections - No need for gas supply, flues or ventilation - Low maintenance and quiet operation - Operates with outside temperatures as low as -20ºC - Maintains rated heating capacity down to -7ºC - Simple grid connection as classified as Connect & Notify*1 - Hybrid function, for use with conventional boilers - MELCloud Wi-Fi connectivity and energy monitoring as standard - Multiple unit cascade function - Optimised low ambient defrost control and operation