The life of your springs are affected by a number of factors:

• the number of daily garage door cycles (a cycle is one open and close)
• the quality and construction of the spring which determine the expected cycle rating
• maintenance and care of the springs
• your environment (metal springs are prone to rust and corrosion)

Standard springs are rated at 10,000 cycles and can be expected to last 7-9 years on average. Heavy duty springs, rated at 50,000 cycles can last up to 45 years if maintained well given the same usage pattern.