Thanks to everyone for your help. I am open to other mfrs if anyone else cares to post, but it looks like there is at least one model that meets the strict requirements.
Lee
Andy,
Thanks for you quick reply. I forgot to mention that R-410A (or equivalent) is another requirement, which knocks out the Trane (R-22), and the Carrier model comes only in whole tonnages, no half-tons.
I am afraid I know the answer, since I have already spent a lot of time researching...
A project I am currently working on is trying to obtain LEED certification, and the LEED consultant is requiring (or desiring) that I spec 16+ SEER, 9.0 HSPF units. These are townhouses, and the loads for half of the units fall between the capacities of a 2T and 3T, so 2.5T is a better fit...