I have a HEIL furnace AC setup. How can I detemine the tonnage of the AC
unit.

The outside condensor info is
Date: 11/87
Model: CA303VKA1
867 800040
Style: 30BC-00087CR
S/N: L8744 22380
MFR No: NCA303VKA1

Any help will be appriciated.

Thanks,
MC