The Hitachi SET-FREE WS series (FSNYW) represents a sophisticated water-cooled VRF solution designed for high-efficiency climate control in modern large-scale buildings. By integrating advanced inverter drive technology with water source heat transfer, these units deliver optimized performance and superior COP values across a wide operational range. The system is particularly engineered to handle complex cooling and heating demands during seasonal transitions, providing an energy-efficient alternative to traditional air-cooled systems. Available in models such as the RAS-8 FSNYW1Q and RAS-10 FSNYW1Q, the units are built for compact installation with dimensions of 1000mm height, 780mm width, and 550mm depth. With a robust design capable of managing water inlet temperatures between 10-45°C, the series supports efficient heat recovery and simultaneous thermal management. These units are an ideal choice for facilities requiring reliable, high-performance HVAC infrastructure that reduces overall energy consumption while maintaining occupant comfort in diverse architectural settings.
Use our free engineering tools to size, convert and diagnose your HVAC system.
Browse air conditioning calculators