I've read several posts that the Trane XR 13 is only available with R-22. Yet I just got a bid for that model with R 410A. The AC model is 4TTR3030 and the evaporator coil is 4TXLB031BC.
Does that sound right? It's a 2.5 ton unit for a 2500 sq ft house that is 2 stories and basement.