Broken Garage Door Spring: Torsion & Extension

A broken garage door spring is the single most common major garage door failure — and the most dangerous to repair yourself. Springs store enormous tension to counterbalance the door’s weight; when one snaps, the door becomes too heavy to lift, hangs crooked, or won’t open at all. Spring replacement is a pro-only job.

Symptoms — You’ll Notice

A loud bang from the garage (the spring breaking) — sometimes hours before you notice
A visible 1–2 inch gap or separation in the coil of the spring above the door
A snapped or dangling spring beside one of the horizontal tracks
The door won’t open with the opener, or the opener strains and stops
The door is extremely heavy or impossible to lift by hand
The door opens a few inches then drops back down
One side sits higher than the other, or the door hangs crooked
A cable that has come loose or jumped its pulley

Torsion Springs vs. Extension Springs

Garage doors use one of two spring systems, and the failure looks different for each.

Torsion springs

Torsion springs are the tightly wound coils mounted on a steel shaft directly above the door opening. They twist to store energy and do the heavy lifting on most modern doors. When a torsion spring snaps, it usually announces itself with a single loud bang, and the break shows as a clear 1–2 inch gap in the coil. The door then feels dead — far too heavy for the opener or your back.

Extension springs

Extension springs are the long, stretched springs running alongside each horizontal track near the ceiling. They stretch and contract as the door moves, one per side. When one snaps it often flies or dangles, the door pulls crooked, and one corner sags — extension-spring doors should always have a safety cable threaded through each spring to contain a break.

How to identify which system you have

With the door closed, look above the opening: a horizontal shaft with one or two wound coils centered over the door means torsion. Long springs stretched parallel to the tracks on both sides mean extension. Older or lighter doors tend to use extension springs; most doors installed in the last 20 years use torsion.

Step-by-Step: What to Do (Safe Checks Only)

Look — don’t touch. With the door closed, confirm the break visually: a gap in the torsion coil above the door, or a snapped/hanging spring beside a track. Do not touch, unwind, or unhook anything.
Stop using the opener. Running the opener against a dead spring burns out the motor, strips the drive gear, and can pull the door off its tracks. If it strained or hummed without moving, leave it alone.
Test the weight by hand — carefully. With the opener disconnected, try lifting the door a few inches. If it’s far too heavy, won’t budge, or rises unevenly, the spring is gone. Lower it gently and stop.
Check for safety cables (extension systems). If a spring snapped and there’s no safety cable through it, treat the area as dangerous and keep people and pets clear. Have safety cables installed during the repair.
Call a licensed technician. There is no safe DIY path beyond confirming the break — winding bars, correct spring sizing, and torque tools are required.

Safety Risks

Garage door springs are under extreme tension and can cause serious injury or death. Never unwind, stretch, adjust, or replace one yourself.
Torsion springs require dedicated winding bars — a screwdriver substituting for a winding bar can slip and break bones or worse.
A snapped extension spring without a safety cable can fly across the garage.
Keep the door closed and keep people and cars out from under it until it’s repaired.
Don’t lift the door manually to “get the car out” — without a counterbalance it can weigh 150–300+ pounds and can fall.

Cost Differences: Torsion vs. Extension

In Orange County, torsion spring replacement typically runs slightly higher than extension work — torsion springs cost more per part and take specialized winding — while extension replacements are usually less per spring but are always done in pairs and should include safety cables. Exact pricing depends on door weight, spring cycle rating, and single vs. double springs. See current ranges in our garage door spring replacement cost guide.

Replacement Options

Replace both springs at once. Springs wear at the same rate — when one breaks, its partner is close behind. Replacing the pair saves a second service call and keeps the door balanced.
Choose a higher-cycle spring. Standard springs are rated ~10,000 cycles; high-cycle springs (25,000+) cost more up front but last years longer on busy doors.
Convert extension to torsion. On many doors an aging extension system can be converted to a smoother, safer torsion setup during replacement — worth pricing if your door is older.

When to Call a Pro

A broken spring is never a DIY repair — call as soon as you spot one. Our licensed, insured technicians carry the correct spring sizes and winding tools for both torsion and extension systems, add safety cables where missing, and balance and cycle-test the door before leaving. Professional spring replacement is available same-day across Orange County, including Irvine and Anaheim.

Call (714) 464-2881 now for same-day spring replacement.

Broken Garage Door Spring: Torsion & Extension | OC