The loss of refrigerant from a system due to a leak is a very common problem. It is normally an easy problem to diagnose; however, locating the source of the leak and repairing it may be difficult and frustrating at times.
It is always best to find and repair the source of the leak. But depending on the size of the system and the size and location of the refrigerant leak, it may not be an easy or inexpensive repair. Depending on the amount of refrigerant contained in the system, the Environmental Protection Agency (EPA) may require the source of the leak be located and repaired.