For light commercial and residential users seeking individual zone control with high heating and cooling efficiencies in a space-saving design. Offers inverter technology as well as Daikin's patented Variable Refrigerant Temperature (VRT) for load-dependent optimization of performance and efficiency. Available in 3, 4 and 5-ton sizes with up to 10 indoor units in a 5-Ton system. http://www.daikinac.com/content/light-commercial/vrv/vrv-s-heat-pump-rxtq/