@Kamikazepinguin@chaosfurs.social Refrigerant manufacturers provide tables that are based on the inherent properties of the coolant and the length and diameter of the lines carrying the coolant. Just getting cold isn't a great indicator because you can actually achieve colder temperatures on the evaporator side with a too-low coolant charge, which will cause it to freeze up. This is the extent of my knowledge after dealing with a few leaky ACs in my lifetime, and does not represent expertise.