A central a/c only needs refrigerant when it leaks. Evaporator or condenser coil problems are the most official cause of central a/c leaks. Damaged coils can leak refrigerant. Other official reasons for refrigerant leaks include holes or cracks in coils, loose linkions, or disfigured compressors. Your central a/c will need to be repaired if it leaks refrigerant. Refrigerant in your a/c absorbs heat from your home’s indoor air. When it reaches the outdoor unit, the refrigerant releases the heat it absorbed indoors. When the refrigerant returns to the indoor unit, it begins the process again. The coils or other components can leak refrigerant, causing the a/c to lose its ability to cool. Signs of a refrigerant leak include hot air coming from your vents, higher than normal utility bills, and hissing or bubbling noises. It’s important to have your a/c checked for leaks if you notice any of these signs. Air conditioners with refrigerant leaks should be repaired immediately. Several factors determine if your central air needs Freon. An older device may require more charging than a newer one. Refilling your device depends on the type of refrigerant it uses. Your central a/c will need to be repaired if it leaks refrigerant. It is important to find the source of the leak and repair it before adding more refrigerant, as this will only temporarily fix the problem. Once you have repaired the leak, your central a/c should be able to maintain its charge for various years.