7 Signs Your Garage Door Spring Is Broken (and What to Do)

If your garage door suddenly feels like it weighs a thousand pounds, or you heard a startling bang from the garage that sounded like a gunshot, there's a good chance a spring just let go. Garage door springs do the heavy lifting on every Florida home — they counterbalance a door that can weigh 150 to 350 pounds — and when one snaps, the whole system stops working safely.

Here in Florida, springs take an extra beating. Salt air from Hutchinson Island to Boca Raton corrodes the steel, summer humidity speeds up rust, and a busy two-car household can cycle a door 1,500 times a year. Most springs are rated for roughly 10,000 cycles, so a failure at six or seven years is common. Below are the seven signs we get called out for most often, what each one means, and what to do next.

How garage door springs actually work

Before the warning signs, a quick primer, because it explains why this repair is different from changing a lightbulb. Your door uses one of two spring systems:

• Torsion springs — the most common setup. These mount on a metal shaft above the door opening and wind tightly to store energy. When you open the door, that stored tension does the work.
• Extension springs — long springs that run parallel to the horizontal tracks on either side, stretching and contracting as the door moves.

Either type holds an enormous amount of stored energy. That's the whole reason a broken spring is a job for a trained technician with the right winding bars and clamps, not a Saturday DIY project. A torsion spring that slips while under tension can break fingers, hands, or worse in a fraction of a second.

The 7 signs your garage door spring is broken

1. You heard a loud bang from the garage

This is the single most common way homeowners find out. A torsion spring under full tension releasing all at once makes a sharp, metallic crack or bang — loud enough to wake the house at night or make you think something fell off a shelf. If you heard it and the door won't work right afterward, the spring is almost certainly the culprit.

2. The door won't open — or only lifts a few inches

With a healthy spring, your opener barely has to work. With a broken one, the opener motor strains against the door's full dead weight, and most safety-rated openers will simply give up. You'll hear the motor run, the chain or belt move, and the door rise an inch or two before stopping or reversing. That's the opener protecting itself, not a problem with the opener.

3. The door is suddenly very heavy to lift by hand

Here's a safe test you can do. With the door closed and the opener disengaged (pull the red emergency-release cord), try lifting the door by hand a foot or so. A properly balanced door feels light and stays put when you let go around waist height. If it feels like dead-lifting a refrigerator and slams back down, the springs are no longer carrying the load.

Practical tip: Only attempt this lift if you can keep both hands free and the door's path is clear. If it feels heavy, stop, lower it gently, and leave it down until a tech arrives. A door with a broken spring can drop fast.

4. There's a visible gap in the torsion spring

Look up at the shaft above the door (with the opener still off). A whole torsion spring is one continuous tight coil. A broken one shows an obvious two- to three-inch gap where the steel separated. Sometimes you'll also see the spring has uncoiled or twisted out of shape. If you see a gap, you've found your answer — and you can stop using the door.

5. The cables have gone slack or jumped off

The lift cables on either side of the door work together with the springs. When a spring breaks, those cables lose tension and can go limp, sag, or pop off their drums. You might also notice the door looks crooked — one side higher than the other — because only part of the system is still holding. Frayed or rusty cables, common on coastal Florida doors, often fail around the same time.

6. The door closes too fast or slams shut

If the spring is weakened or partially broken rather than fully snapped, the counterbalance is off. The door may rise sluggishly and then come down faster than normal, even slamming the last stretch. This is a serious safety red flag — a door that slams can damage panels, the opener, and anything (or anyone) underneath it.

7. The door is crooked or stuck in the tracks

When one side loses spring support, the door can rack to one side and bind against the tracks. You might see one bottom corner sitting lower, or the door hung up at an angle and refusing to move in either direction. Forcing the opener at this point usually bends tracks or strips the opener gear — turning a single-spring repair into a much bigger bill.

What to do right now (a quick checklist)

If you suspect a broken spring, here's the safe sequence:

1. Stop using the opener. Repeatedly hitting the button strains the motor and can damage the gears, cables, or tracks.
2. Leave the door where it is. If it's down, keep it down. If it's stuck partway up, don't walk or park under it.
3. Don't try to "balance" or wind the spring yourself. This is where most serious garage injuries happen in Florida homes.
4. Disengage the opener only if the door is fully closed and you need manual access — then secure it with locking pliers on the track so it can't slide.
5. Call a licensed pro and mention it's a spring. We carry the right springs on the truck and can usually fix it same day.

Should you replace one spring or both?

If your door uses two torsion springs and one broke, we almost always recommend replacing both. They were installed together, they've cycled the same number of times, and the second one is statistically right behind the first. Replacing the pair saves you a second service call — and a second surprise — usually within a few months. We'll always show you the wear and let you decide, with upfront pricing before any work starts.

A note on Florida's salt and humidity

If you live near the water — Hutchinson Island, Jupiter, Delray Beach, or anywhere catching that coastal breeze — ask about galvanized or corrosion-resistant springs. Standard springs rust faster in salt air, and a light coat of the right lubricant twice a year noticeably extends their life. It's a small step worth folding into a yearly tune-up.

When to call a pro

A broken garage door spring is one of the few repairs we genuinely urge homeowners not to attempt. The tension involved is dangerous, the specialty tools matter, and a small mistake can cause a serious injury or a much costlier repair. If you've spotted any of the seven signs above, the safe move is to stop using the door and have a technician take a look.

Our Florida crews replace garage door springs every day, from Port St. Lucie to the Palm Beaches, and we keep the common sizes stocked on every truck for fast, same-day fixes. While we're there, we'll check the cables, rollers, and balance so you're not back here in three weeks. If your door has stopped working entirely or trapped a vehicle inside, our 24/7 emergency garage door service can get to you fast. You can also learn more about our full lineup of garage door repair and installation services, or if you're tackling a driveway entry project, see our automatic gate options.