Larger Freon leaks will most likely need to be addressed by a air conditioning service technician. They may have to solder cracks or holes in line and even replace evaporator or condenser coils.
If your system loses all the Freon do to a larger leak it will need to be evacuated to remove any moisture and none condescension from the system.
This is procedure is started by putting a vacuum pump on the system that sucks all the contaminant's out. If this is not done when your system will not function properly even after recharging it. Many times when you have a smaller leak in your system the technician will spend time looking for a leak that can not be found and just add freon to the air conditioner only to have it leak out again by the next cooling season. This can end up costing you hundreds of dollars every year or two.
The other problem with just adding freon is that before your air conditioner gets so low that you realize it your energy costs will be very high to run a system that is not fully charged. If you have a freon leak it is a good idea to have a technician perform a full leak search to locate the leak. Questions? Give Jones Air Conditioning of Naples a call: 239-596-5855