Garage door torsion springs are responsible for lifting the weight of a garage door, which is typically between 150 and 250 pounds. They are found above garage doors, and they need to be functional for the garage door opener to lift the door. Simply put, they counterbalance the weight of the garage door, making it easier to open and close.
Garage door torsion springs come in five different designs: standard residential and standard commercial, EZ, Torquemaster, mini-ware and steel rolling door torsion springs. They are fitted to a metal shaft above the door, and that shaft can either house the springs or pass between them depending on the garage door system installed. These springs apply torque to the metal shaft, creating a lifting force on the door.
Torsion springs have different characteristics that determine the amount of torque a particular spring provides: the inside diameter, the wire size and the length of the spring. The larger the spring, the heavier the door it can lift. A garage door weighing 250 pounds needs an equal spring force to pull against its weight. Garage door springs have specific life spans, which determine how long the springs last before they break or deform.