XH5Up to 15.2 SEER2 XH4Up to 14.3 SEER2 HH8Up to 18 SEER2 HC19Up to 18 SEER2Up to 8.1 HSPF2 HC20Up to 19 SEER2Up to 9 HSPF2 HMH7Up to 17 SEER2 THE2Up to 14.3 SEER2Up to 8 HSPF2 THF2Up to 16 SEER2Up to 8.1 HSPF2