Torsion spring cycle-life ratings
A garage-door spring is rated in cycles — one full open-and-close is one cycle. Stock springs are often only 10,000 cycles; upgrades run 20,000 or 30,000. Service life = rated cycles ÷ (cycles per day × 365). The table shows the years each rating lasts at typical daily use — labeled ratings. Use them with the cycle-life helper and the spring replacement cost tool.
| Spring rating | 2 cycles/day | 4 cycles/day | 6 cycles/day |
|---|---|---|---|
| 10,000-cycle | 13.7 yr | 6.8 yr | 4.6 yr |
| 20,000-cycle | 27.4 yr | 13.7 yr | 9.1 yr |
| 30,000-cycle | 41.1 yr | 20.5 yr | 13.7 yr |
Service life = rated cycles ÷ (cycles per day × 365). One open + close = one cycle. Labeled ratings — actual life depends on balance, maintenance and climate. ⚠️ Spring replacement is for a trained technician.