Good to know
Why garage door springs break
The springs do the heavy lifting, counterbalancing a door that can weigh 150 pounds or more. They are rated for a set number of cycles, then they wear out and fail.
Most doors use either a torsion spring above the opening or a pair of extension springs along the tracks. When one breaks you usually hear a loud bang, and the door becomes far too heavy for the opener or for you to lift safely.
Springs hold a large amount of stored tension, so a slip can cause serious injury. This is the one repair to always leave to a technician. We replace springs in pairs so the door stays balanced, and we can fit higher-cycle springs that last longer.