CVH8Up to 18.5 SEER2 C4H7TUp to 17 SEER2Up to 8.1 HSPF2 C4H5SUp to 15.2 SEER2Up to 8.1 HSPF2 DLCURAUp to 18 SEER2 N4H7TUp to 17 SEER2Up to 8.1 HSPF2 N4H5SUp to 15.2 SEER2Up to 8.1 HSPF2 N4H5S***CUp to 15.2 SEER2Up to 8.1 HSPF2