Reily Air Conditioning Characteristics

[Timcote1960]

Hi,

Right now I'm scrambling to find my misplaced addendum logs for N639GC, but in the meantime I'd asked my AP to have a look at my progressively weakening Air Conditioning system. He asked me if it's a 134a system. I do recall, from a earlier reading of aformentioned wandering logs, that this 337G had an AC system put in by Reily. Is it almost certainly a 134a system?

Tim Cote