Ans: If there is no leakage, the average life of a refrigerant is 15 to 20 years. The life span of the refrigerant is equal to the life span of the refrigerant. However, it depends from one model to another, and a compact refrigerator is likely to have less life span for its refrigerant. If you know the signs and symptoms of low refrigerant gas, you can refill timely.