I have the design of a 34-story condo project starting up and the initial design idea is to use VTAC units in the condos. It would eliminate refrigerant lines and also eliminate the use of a central system (cooling towers, chillers, etc). However, I am having trouble locating a manufacturer who make a complete line of VTAC units. I know Friedrich used to make them from 1.5-5 tons, however, with the 13 SEER regulations in affect, they discontinued most of their VTAC product line. Anybody know of another manufacturer out there who makes a complete line? Another catch is that I need to them use R-410a or another environmentally friendly refrigerant as there is a good possibility the owner will seek LEED accrediation.