Bryant Packaged Systems 575CUp to 13.4 SEER2Up to 81 AFUE 675CUp to 13.4 SEER2Up to 81 AFUEUp to 6.7 HSPF2 605CUp to 13.4 SEER2Up to 6.7 HSPF2 705CUp to 13.4 SEER2 PA5ZUp to 13.4 SEER2 PH5ZUp to 13.4 SEER2Up to 6.7 HSPF2 707EUp to 16 SEER2 677EUp to 15.5 SEER2Up to 81 AFUEUp to 7.5 HSPF2 607EUp to 15.5 SEER2Up to 7.5 HSPF2 577EUp to 16 SEER2Up to 81 AFUEUp to 11.5 HSPF2