Why garage door springs break in batches

By Heather Window & Door · 11 September 2026 · Updated 24 September 2026

Springs are rated in cycles, not years

A torsion spring is a consumable part. Its service life is measured in cycles, where one cycle is the door going up once and coming down once. Raynor, a door maker, puts a typical torsion spring at 10,000 to 15,000 cycles and an extension spring at 5,000 to 10,000. The rating on yours comes from its maker.

Do the arithmetic on your own household. Two adults leaving and returning on a weekday is four cycles, and a delivery or a teenager adds more. Raynor’s own worked example is a door opened and closed four times a day, which it puts at about seven to ten years for a torsion spring. Double the traffic and the years roughly halve.

That is most of the story. A spring that goes after seven years on a busy household door is not failing early: it is doing what a consumable part does. The rest is how it was installed and looked after — DASMA’s technical sheet on spring cycle life lists a spring fitted to a door heavier than its specification, the wrong number of turns, a corrosive environment, extreme heat or cold and missed lubrication among the things that shorten it.

Why the failures cluster

Many North Texas subdivisions were built in phases, often by the same builder. Doors bought together may carry the same spring specification and go in within months of each other.

So on a street built in one phase, springs can reach the end of their cycle life around the same time, though households differ in how much they use the door, and that changes the order. A second wave can follow when the first replacements age out.

What a broken spring looks like

You will usually hear it before you see it. The sound is loud, sharp and metallic, and people consistently describe it as a gunshot from the garage. It often happens when nobody is in the room, because the spring is under its highest load when the door is closed.

• The door will not lift Or it lifts a few inches and stops.
• The opener strains, hums or reverses It is meeting a weight it was never meant to carry.
• The door feels enormously heavy by hand Because the springs are no longer carrying it.
• A visible gap in the coil Look at the spring on the shaft above the door. An intact spring is a continuous coil; a broken one has a break of an inch or two. That is the clearest confirmation.

Do not run the opener

This is an expensive mistake to make. The opener is not designed to lift the weight of the door. It is designed to guide a door the springs have already balanced. A sectional door is heavy — how heavy depends on how it is built — and the springs carry essentially all of it.

Run the opener against a broken spring and one of three things happens: you strip the drive gear, you burn out the motor, or you pull the door out of its track and add track repair to the job.

Why we replace both springs

Most doors run a pair of torsion springs. When one breaks, people reasonably ask why we are quoting two.

The second spring is the same age, has the same number of cycles on it, and was made in the same batch. It is likely to be close behind. Replacing it now avoids a second service call later, and in the meantime a mismatched pair leaves the door out of balance, which puts uneven load on the opener, the cables and the track.

If someone quotes a single spring on a two-spring door without explaining this, ask why.

Can you tell before it breaks?

Sometimes. A spring approaching end of life can give warnings that are easy to dismiss.

• It has become slower or noisier Over a year, not overnight.
• It shudders at the same point every time The same place in its travel, every cycle.
• It no longer holds position Disconnected from the opener, at waist height.
• Visible rust, gapping or stretching In the coil itself.

That third test is the useful one. With the door fully closed and no sign of a broken spring, pull the release cord to disconnect the opener, lift the door by hand to about waist height, and let go. A correctly balanced door stays where you left it. A door that drifts down or shoots up may mean the springs need attention, and that is a call to a technician.

That is exactly what a maintenance visit checks, along with the cables, rollers, track alignment and the safety reverse.

Please do not do this one yourself

We say this about very little. Some maintenance, such as cleaning and lubricating, is fine for a competent homeowner, and we will happily talk somebody through a photo-eye alignment on the phone.

Torsion springs are the exception. A wound spring holds a serious amount of stored energy, and releasing it without proper winding bars, correctly sized and correctly seated, is how people lose fingers and break bones. The bottom brackets and the cables stay under tension even when the door is fully open, which is why we say never to unbolt one.

The videos make it look manageable. It is not.

Sources

1. Raynor — The complete guide to garage door spring types and lifespan
2. DASMA — Technical Data Sheet 190, “Factors Affecting Spring Cycle Life”

Sources read 23 September 2026, except the Raynor page, read 24 September 2026. Linked so you can check them rather than take our word for it.

Written from the manufacturers’ own published guidance — every source is linked above.

Describe it however makes sense to you

Read enough? Tell us about the door.

However you describe it is enough — no part names needed. The visit and the written estimate cost you nothing, and nothing starts until you approve the number.

• However you describe it is enough. No part names needed.
• The written estimate is free. Nothing owed if you pass.
• Nobody starts the repair until you approve the number.