Product class (metric),North (30 states),Southeast (16 states + DC),Southwest (4 states),What the date test keys on
"Split AC, under 45,000 Btu/h (SEER2)",13.4,14.3,14.3,Installation date (South); manufacture date (North)
"Split AC, 45,000 Btu/h and up (SEER2)",13.4,13.8,13.8,Installation date (South); manufacture date (North)
"Split AC, EER2",none,none,"11.7 under 45k, 11.2 at 45k+; 9.8 if SEER2 is 15.2+",Installation date
Split heat pump (SEER2 / HSPF2),14.3 / 7.5,14.3 / 7.5,14.3 / 7.5,Manufacture date
Packaged AC (SEER2),13.4,13.4,13.4,Manufacture date; Southwest EER2 at installation
"Packaged AC, EER2",none,none,10.6,Installation date
Packaged heat pump (SEER2 / HSPF2),13.4 / 6.7,13.4 / 6.7,13.4 / 6.7,Manufacture date
Small-duct high-velocity (SEER2 / HSPF2),12 / 6.1,12 / 6.1,12 / 6.1,Manufacture date
Space-constrained AC / heat pump (SEER2; HSPF2),11.7 / 11.9; 6.3,11.7 / 11.9; 6.3,11.7 / 11.9; 6.3,Manufacture date