Fujitsu’s Airstage J-II single-phase variable refrigerant flow heat-pump serves ambient heating and cooling applications in a 3- to 5-ton size range, making it ideal for large residential and small commercial installations. It offers up to 19.8 SEER and 11.4 HSPF. Installers can connect up to nine indoor units to each condensing unit and choose from 11 indoor unit styles, ranging in size from 7,000 Btu to 60,000 Btu. Additional features include: scheduling, sleep timer, economy operation and automatic season changeover.