There are two very different types of garage door springs, and knowing which one you have changes both the cost and the danger level of a repair. Torsion springs mount horizontally above the door, on a metal shaft, usually one or two thick coiled springs. They wind and unwind to lift the door and are the more common setup on newer installations. Extension springs run along the hori... https://absolutegaragedoor.net/garage-door-spring-replacement/