I need to replace the condensing unit for a homeowner and I am not sure what size the old one is. Here is the problem, the units data tag is sun bleached and unreadable. The compressor also has no legible numbers. The homeowner says another A/C man told her it is a 1 1/2 ton unit.

The old unit is for an earth contact home. It has a 5/8 suction line and 3/8 liquid line. The furnace is a 55,000 BTU input/43,000 BTU output.

I tend to think 1 1/2 ton is correct but I just wanted some feedback.

Any guesses?