How long it takes to fix a spring on a garage door depends on the type of spring, experience level, and whether other parts need replacement, but for a professional technician the job is relatively quick. For an experienced garage door professional, replacing a single torsion spring typically takes 45 minutes to 1.5 hours from arrival to final testing and balancing. Replacing a pair of torsion springs, which is recommended when one breaks, usually takes 1 to 2 hours because the technician must release tension, remove both springs from the torsion tube, install the new matched pair with correct wire size and length, wind each spring with the proper number of quarter turns, typically 30 to 36 quarter turns for a 7 foot door, and then test balance and adjust. Extension springs along the sides are a bit faster, often 45 minutes to 1 hour for a pair. If you attempt DIY, which is not recommended due to the extreme danger of high tension, it could take 2 to 4 hours for a first-time homeowner, plus time to source the correct spring size and buy winding bars. Additional time may be needed if cables, bearings, or rollers also need replacement, or if the door is heavy wood or has damage from operating with a broken spring. Most companies offer same-day service and can complete the repair in one visit.
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