So, how long does freon last in ac unit anyway?
If you're wondering how long does freon last in ac unit, the honest answer might surprise you: it's actually designed to last for the entire lifespan of the machine. Unlike the gas in your car or the milk in your fridge, refrigerant—which many people still call "freon" even if it's the newer stuff—doesn't get "used up" as the air conditioner runs. In a perfect world, that chemical loop stays sealed tight, and you'd never have to think about it for fifteen or twenty years. ...