I am trying to find out about a older Trane unit.
The Air Handler is Model # TWE040E13FA1 and S/N M4956H91V
The Condenser is Model # TTF042A100A0 and S/N M2535YBHF
If anyone can tell me the age or seer rating, my mother is wanting to buy this used unit and I'm trying to find out about it. Please help.