
The Daikin VRV IV W+ series (model RWEYQ-T9) is a highly efficient, water-cooled VRF solution engineered specifically for high-rise building applications. By leveraging water as a heat source—including geothermal energy—this system significantly reduces CO2 emissions and provides a versatile, centralized solution for climate control, ventilation, and hot water production. Its unique zero heat dissipation design eliminates the need for specialized ventilation or cooling in the technical plant room, offering exceptional installation flexibility. Built upon core VRV IV technology, the unit features full inverter compressors and Variable Refrigerant Temperature (VRT) functionality, which allow the system to continuously optimize energy consumption based on real-time demand. The compact, lightweight chassis allows for dense installation, with the ability to stack up to 42HP in under 0.5m² of floor space. Maintenance and installation are streamlined through accessible design elements, such as a rotating switch box and dual connection options for refrigerant piping. Additionally, the system supports seamless integration with the Daikin Cloud Service for proactive 24/7 monitoring and performance optimization.
Use our free engineering tools to size, convert and diagnose your HVAC system.
Browse air conditioning calculators