A 3-ton air conditioning unit can hold 6 to 12 pounds of Freon, depending on the unit. The exact amount of Freon needed is determined by a variety of factors, such as the type of unit and where it is installed.Continue Reading
The amount of Freon or other refrigerant necessary to fill any size air conditioning unit depends on factors such as the size of the evaporator coil and whether the air conditioner is an all-in-one, self-contained exterior unit or a split system unit in which the condenser and compressor are outside and the air handler and coil are inside. The length of the lineset, the copper pipes which connect the outside condensing unit to the indoor evaporator coil on a split system unit, also affects the amount of Freon necessary to fill the unit, as does the diameter of the lineset tubing.
The seasonal energy efficiency ratio of the unit also impacts the amount of Freon an air conditioner requires; the higher the SEER rating, the larger the evaporating coil. The larger coil surface makes the air conditioner more efficient while increasing the amount of Freon needed to fill the unit. Freon, also known as R-22, is regulated by the Environmental Protection Agency, and only an EPA-certified technician can buy and handle it.Learn more about Heating & Cooling
After purchasing the Freon, attach the can to the air conditioning compressor, open the can, replace the Freon, close the can and repeat the steps as necessary. It is extremely important to prevent the Freon from touching the skin as frostbite will occur.Full Answer >
Adding Freon to a window air conditioner involves cleaning the air conditioner, attaching a new Freon container and allowing it to intake new Freon until the container is drained. While this task is usually performed by a refrigeration mechanic, a lay person can complete it by purchasing a Freon kit.Full Answer >
Most window air conditioners do require Freon in order for them to work properly. There is a type of Freon referred to as R-22 or HCFC-22, and it was most common in air conditioner window units prior to 2010.Full Answer >
If an air conditioner is not cooling as well as it once was, it may need Freon. Some signs of this include the air conditioner being turned up to the highest setting, but barely producing any cold air, or cold air not coming out at all. Another sign is if large amounts of water are leaking from the air conditioner's air handler.Full Answer >