26SCA542WC13
26S = Air Conditioner with Puron Advance Refrigerant (R454B) Single Stage 
C = Comfort
A = Initial Series
5 = 14.3 SEER2
42 = 42,000 Btuh
W = Stnd SW AC
C = Coastal Coated
1 = Not Defined
3 = 208/230 ---1