This is a fairly common air conditioning myth among homeowners—that the refrigerant in the system “runs out” like gasoline does from a car. Unfortunately, dishonest or well-meaning but ill-informed amateurs have contributed to this myth. They may have told you that refrigerant needs to be “topped off” every now and then, like during your maintenance session.
We understand why you might believe this misconception, too. Refrigerant seems like a “fuel” for your air conditioner, right? Well not quite—it is what enables the cooling process, but it recycles continuously throughout the system rather than depleting like gasoline from a car. In other words, your air conditioner should never lose refrigerant—and if it is, it means you have a leak that needs repair.