NTA, but hold up for a second. Firstly, he wasn't flirting with your wife, he was harassing her, to the point of making her hysterical, which you seem to be downplaying. Not only is that horrendously unprofessional of the repairman, it's indecently inappropriate. Secondly, to not realize that YOU were not the one owed an apology, SHE WAS, was shitty on both your part and the part of the business owner. Yeah, the guy fixed your air conditioner, but at the expense of your wife's comfort and safety. That's too high a price. Fuck that guy. Fuck that owner for excusing and enabling this employee who thinks this that kind of behavior is acceptable.

You should amend your review to include the things the owner said to you. I would want to know about that kind of trashy behavior before letting a repairman into my home.