“Freon” is a brand name of refrigerant, but it has been come to be used to generically describe any refrigerant. In this post we will use the two words interchangeably. So, regarding the question of when you should charge the freon in your air conditioner, the answer is never. As long as there isn’t a leak, you should never need to recharge the AC unit. If your air conditioner stops blowing cold air, and the service tech says you need to add some Freon, but doesn’t fix the leak, you need a new AC company, because unless the leak is…