I know they have dry r22 units available for under 5 ton systems and only 208 single phase that I've seen so far. Anyone know who makes a 407c unit in larger tonages and 3 phase? McQuay did, but they are telling me they don't anymore. Tried Trane too. Waiting to hear back from Carrier. Seems like a big market hole to me??? What can you do if the evap and line set are fine and they just need a condenser? In this case the chemicals in the plant destroyed the aluminum fins on the condenser coil but the evap is fine.