proper wire size?

Installing a ductless minisplit AC unit 1.5 tons, it calls for either a 15 or 20 amp breaker, not sure yet. The unit is 65’ away from the panel, what size wire do I want to run and be on the safe side. I will be using Romex. 12-2 or 10-2 ??

Thank you
New member

See our response in the OTHER forum you posted this same question in…The HVAC Thread.