TH4 Up to 15 SEER Up to 9.5 HSPF TH16 Up to 18 SEER Up to 10 HSPF THF2 Up to 16 SEER2 Up to 9.5 HSPF2 THE2 Up to 14.3 SEER2 Up to 8 HSPF2 HMH7 Up to 18 SEER Up to 17 SEER2 HL19 Up to 19 SEER Up to 18 SEER2 Up to 10 HSPF HL20 Up to 21 SEER Up to 19 SEER2 Up to 10.75 HSPF
