Spring type
Torsion vs extension, wire size and cycle rating.
01Torsion vs extension springs
Most newer Overland Park homes have torsion springs on a bar above the door. Older garages may have extension springs that stretch along the horizontal tracks. Both store enormous energy and should be replaced by trained technicians using winding bars and safety cables.
02Replace in pairs
If a door has two springs and one breaks, the other has seen the same number of cycles. Many technicians recommend replacing both so the door stays balanced. Ask about higher-cycle springs if your door gets heavy daily use.
03Cold weather breaks
Spring failures are more common in winter, when steel is colder and stiffer. If your opener strains or the door feels heavy, have the balance checked before it breaks. A failing spring can also wear out the opener; see garage door opener repair.