Broken Garage Door Spring: Signs, Dangers & What to Do

What Garage Door Springs Actually Do

Garage doors are heavy — a standard single-car door weighs anywhere from 100 to 200 lbs, and a two-car door can reach 250–400 lbs depending on the material (steel, wood composite, solid wood) and insulation level. Springs counterbalance that weight, making the door effectively weightless to the opener motor and to anyone lifting manually.

When a spring fails, that counterbalance disappears. The opener isn't designed to lift the full door weight unassisted — and neither are most people.

Torsion Springs vs. Extension Springs

There are two spring types used in residential garage doors:

• Torsion springs — Mounted horizontally on a metal torsion bar above the door opening. Most modern installations use torsion springs. They store energy by twisting as the door closes and release it as the door opens. When a torsion spring breaks, you'll typically hear a sharp, loud bang — often described as a gunshot — because the stored rotational energy releases suddenly.
• Extension springs — Run parallel to the horizontal track sections on either side of the door, above the tracks. Common in older installations and on smaller doors. They stretch under load and contract when the door opens. Less common in new construction but still widely in service.

Some doors have two torsion springs (common on heavier double-car doors) and some have one. A door with two springs can sometimes still partially operate after one breaks — but it won't operate safely, and you should treat it the same as a complete failure.

Signs of a Broken Garage Door Spring

The signs are usually unmistakable:

• A loud bang from the garage — especially at night or early morning when no one is using the door. The bang is the stored spring energy releasing.
• The door is extremely heavy — if you try to lift manually and the door feels like dead weight (or won't go above ankle height), the spring is almost certainly broken.
• A visible gap in the torsion spring — look at the horizontal coil above the door. A broken torsion spring usually has a clear gap where the coil snapped.
• The opener strains without moving the door — the motor may hum, run briefly, or cycle on and off without the door moving. The opener's overload protection kicks in when it detects too much resistance.
• The door opens crookedly — if one of two torsion springs breaks, the door may lift but angle to one side, putting stress on cables and tracks.
• Cables hanging loose or piled at the base of the door — when a spring breaks, the cable on the same side often goes slack or unspools.

What to Do Right Now

1. Stop using the door — don't run the opener, don't try to lift it manually.
2. If your car is inside, call for service before attempting anything — same-day service is typically available; emergency response is available after hours.
3. Disconnect the opener by pulling the red manual-release cord — this prevents accidental activation.
4. Don't attempt to wind or adjust the spring yourself.

If the door is stuck closed and the car is inside: in some cases a door with a broken spring can be manually lifted if two people work together and lift evenly — but only attempt this if the spring is visibly broken (not just suspected) and if you have help. Do not attempt a solo manual lift on a door with a broken spring.

Spring Repair Cost: Honest Ranges

Spring replacement cost depends on the spring type, size, weight rating, whether one or two springs are being replaced, and your location. These are rough ranges — not guarantees — and regional variation is real:

Spring type	Typical range	Notes
Extension spring (one)	$75–$200	Standard residential sizes
Torsion spring (one)	$150–$350	Varies with spring size and wire diameter
Two torsion springs	$200–$450	Replacing both at once is typically recommended
High-cycle upgrade	Add $50–$150	25,000-cycle springs vs standard 10,000-cycle

Emergency or after-hours service typically costs more. Get a written quote before any work begins — reputable technicians will provide one.

See our full garage door repair cost guide for context on what drives prices up or down.

Spring Lifespan: When Will It Fail Again?

Springs are rated by cycle count — one cycle is one open-and-close. Standard residential springs are rated for roughly 10,000 cycles. At two to three uses per day, that works out to roughly 7–10 years for an average household.

High-cycle springs (15,000–25,000 cycles) are available at a higher upfront cost and are worth considering for high-use households or anyone who wants to reduce the frequency of replacement. Ask your technician whether high-cycle springs are available for your door's spring size.

Climate also affects lifespan. Springs in humid climates corrode faster; springs in areas with large temperature swings experience more fatigue. Annual lubrication of the spring coils with a lithium-based lubricant helps extend life.

Related guides: Garage Door Won't Open or Close · Repair Cost Guide · Repair or Replace?

Service page: Spring Repair

Common Questions About Broken Garage Door Springs

• Is a broken garage door spring an emergency? +
• Can I still use my garage door with a broken spring? +
• How long does spring replacement take? +
• My spring isn't broken but the door feels heavier than it used to — should I be concerned? +
• Should I replace both springs at the same time even if only one broke? +