What's the average lifespan of a garage door spring?

The average lifespan of a garage door spring is measured in cycles and years, and it depends on spring type, usage, and maintenance. Most standard torsion and extension springs are rated for 10,000 cycles, where one cycle equals one full open and close of the door. With average household use of 2 to 4 cycles per day, this translates to about 7 to 10 years of service before metal fatigue causes the spring to break with a loud bang. If you use your garage as the main entrance and cycle it 6 to 8 times per day, lifespan drops to 4 to 6 years. High-cycle springs are available rated for 20,000, 25,000 or 30,000 cycles and can last 12 to 20 years, making them a good investment despite higher upfront cost. Lifespan is shortened by lack of lubrication, rust and corrosion from moisture, especially if gutters above the garage overflow and drip water onto the springs, extreme cold that makes steel brittle, and springs that are undersized for the door weight causing overstress. Extension springs tend to have slightly shorter lifespan than torsion springs. Regular maintenance such as lubricating with silicone lubricant twice a year, keeping gutters clean, and annual professional balance checks can help you reach the upper end of the average lifespan.