The garage door may have looked fine in the dark, but after the spring snaps on a cold morning, it becomes heavy, stuck

https://doorspring583.raidersfanteamshop.com/when-garage-door-opener-installation-is-needed-after-a-winter-spring-failure

The garage door may have looked fine in the dark, but after the spring snaps on a cold morning, it becomes heavy, stuck, and clearly broken.