Torsion springs are heavy-duty springs mounted to a metal rod that runs parallel to the door – directly above the door opening. These springs are tensioned; they twist and coil whenever force is applied. They require the use of cables and pulleys. Standard torsion springs generally have a 10,000-cycle lifespan.
Extension springs are lighter-weight springs that run perpendicular to the door and are mounted above the horizontal portions of the door tracks. These springs are tensioned by extending out. Like torsion springs, extension springs also require cables and pulleys, as well as safety cables. These springs should last between 5,000 and 10,000 cycles.
Average Life Expectancy
A cycle represents opening and closing the door one time. For example: The average household opens and closes the garage door four times daily, which gives a standard 10,000-cycle torsion spring a lifespan of approximately seven years; high-cycle springs can double this number. The more the door is used, the sooner the springs will fail, necessitating replacement. Here is a good guide to go by.
- 2 times daily = 14 years (approx)
- 4 times daily = 7 years (approx)
- 6 times daily = 5 years (approx)
- 8 times daily = 3 years (approx)