Garage Door Spring Broke? Don't Touch It — Here's What to Do

It usually announces itself with a bang loud enough to mistake for something falling off a shelf — then the garage door won't open, or it opens a few inches and slams back down. The short answer: a broken garage door spring is a job for a professional, full stop. Those springs hold hundreds of pounds of tension, and they injure thousands of DIYers every year. Here's how to confirm the diagnosis, keep everyone safe, and get it fixed fast.

The short answer: what just happened

Your garage door is heavy — a standard double door weighs 150 to 250 pounds. The springs counterbalance that weight so the opener (and you) only handle a fraction of it. When a spring snaps, the door's full weight returns instantly. The opener isn't designed to lift a dead-weight door, so forcing it will burn out the motor or snap the door off its tracks.

How to confirm it's the spring

Look at the spring assembly above the door (torsion spring, mounted on a horizontal bar) or along the sides above the tracks (extension springs):

• A visible gap in the torsion spring — the coil will have a 1–2 inch separation where it snapped
• A loud bang you heard from the garage, with no other explanation
• The door feels enormously heavy when you try to lift it manually (with the opener disconnected)
• The door opens crookedly or one side lags — one of two extension springs broke
• Cables look loose or tangled — a broken spring often lets the cables slip off the drums

If the spring looks intact but the door won't move, the problem may be the opener, a locked handle, or a track obstruction — check those before assuming the spring.

What NOT to do

• Do not try to replace the spring yourself. Torsion springs store enough energy to cause serious injury — broken bones, lacerations, worse. This is one of the few home repairs where the injury statistics genuinely justify calling a pro every time.
• Do not keep running the opener. A struggling opener will strip its gears or pull the door off the tracks, turning a $200 repair into a $600 one.
• Do not prop the door open. A door with a broken spring can slam shut without warning. If you must get a car out, lift it manually with help, move the car, and lower it carefully — then leave it closed.
• Do not "just replace both springs with stronger ones." Springs are sized to the door's exact weight. Wrong springs wear out the opener and create new dangers.

What you CAN do safely

1. Disconnect the opener using the red emergency release cord — pull it down. This separates the opener from the door so it doesn't fight the dead weight. 2. Check for a manual lock — some doors have a slide lock that engages; make sure it's not just locked. 3. Visually inspect from a safe distance. Confirm the broken spring, look for frayed cables, check that the door is sitting level in its tracks. 4. Keep kids and pets away from the garage until it's repaired. A partially raised door with a broken spring is unstable.

What the repair involves (so you know what's fair)

A pro will: confirm the spring type and the door's weight, install correctly sized springs (usually replacing both, since they age together), reset the cable drums, rebalance the door, and test the opener's force settings and safety sensors. The whole job typically takes under an hour.

Typical cost context: a standard torsion spring replacement by a garage door pro commonly runs roughly $200 to $350 in markets like Long Island, including parts and labor. High-lift or oversized doors cost more. If the opener was damaged by running against the dead weight, that adds to the bill — another reason not to force it.

Preventing the next snap

• Springs last roughly 10,000 cycles (about 7–10 years of normal use). If yours are that old, a proactive replacement beats a surprise failure.
• Lubricate the springs, rollers, and hinges once or twice a year with a silicone-based lubricant — not WD-40, which attracts dust.
• Have the door's balance checked during any garage door service visit: disconnect the opener and the door should stay put halfway up.
• If your door is getting noisy or slow, that's the system telling you something's wearing out — don't wait for the bang.

On ZIP Pros — "Pros in your ZIP" — describe the problem once and get free quotes from local garage door and handyman pros, with real starting prices shown up front. Same-day service is common for broken springs since it's a known emergency.