Lennox Mini-Split Systems MCBUp to 21 SEERUp to 21 SEER2 MHBUp to 21.5 SEERUp to 21.5 SEER2Up to 10.8 HSPFUp to 9.1 HSPF2 MPCUp to 25.5 SEERUp to 26.5 SEER2Up to 13.2 HSPFUp to 13.6 HSPF2