Signs of a broken garage door spring (and what not to do next)

The sound comes first

Almost every broken spring call starts the same way: a loud bang from the garage, loud enough that people assume something fell off a shelf or a car door slammed. Nothing looks wrong. Then the next morning the door won't lift.

That bang is the torsion spring above the door letting go. It's under enormous tension, and when the steel fatigues it releases all of it at once against the shaft. The noise is the whole event.

Four things to check before you call

You can confirm a broken spring yourself in about thirty seconds without touching anything dangerous.

Look at the coil above the door. A healthy torsion spring is a continuous tight coil. A broken one has an obvious two-to-three inch gap where the steel separated. That gap is conclusive.

Pull the emergency release and try to lift the door by hand. A balanced door stops and holds wherever you leave it. A door with a broken spring feels like lifting a fridge and slams back down the moment you let go. Do this only if the door is already closed.

Listen to the opener. If it runs, strains, and the door lifts two inches then stops, the motor is fighting the door's full weight and losing.

Check the cables. When a spring goes, the cables often go slack or unwind off the drums. Loose cable hanging beside the door is a second confirmation.

What not to do

Don't keep pressing the remote. Every attempt runs the opener against 150 to 250 pounds of unbalanced door. Openers are rated to move a counterbalanced door, not lift a dead one. This is how a spring job turns into a spring plus opener job.

Don't pull the red release cord on a door that's stuck open. With the spring gone, the counterweight is gone. Disconnecting the trolley can drop the door under its own weight. If your door is open and the spring is broken, call before you touch the cord.

Don't order a spring online and fit it yourself. Winding a torsion spring requires proper winding bars and the correct wire diameter, inside diameter, length and wind count for your specific door weight. Fitted wrong, it either fails in months or takes your hand off.

Why springs break when they do

Springs are rated in cycles, not years. A standard spring is rated for around 10,000 cycles. If your garage is the main way the family enters the house, four to six openings a day is normal, which puts a standard spring at four to seven years.

Cold accelerates it. Utah winters put steel through hard temperature swings, and a spring already near the end of its cycle life almost always fails on a cold morning rather than a warm afternoon. That's why the phone rings hardest in January.

Rust is the other accelerant. Salt and grit tracked in off the driveway corrode the coil, and corroded steel fatigues faster.

Replace one spring or both?

If your door uses two springs, replace both. They were installed on the same day and have cycled the same number of times, so the survivor is statistically weeks or months from its own failure. Doing the pair on one visit costs meaningfully less than two separate call-outs.

In Utah, a single torsion spring replacement typically runs $185 to $345, and a matched pair $285 to $495 — less than twice the single because the labour and the trip only happen once.