What Garage Door Springs Actually Do
The motor on your garage door opener is not what lifts the door. The springs are. A standard sectional garage door weighs between 150 and 250 pounds, and the spring system is engineered to counterbalance that weight so the opener only has to overcome a few pounds of resistance. When the spring system is healthy, the door feels almost weightless when you lift it by hand.
There are two common spring types in residential garage doors: torsion springs, which mount on a steel shaft above the door and twist to store energy, and extension springs, which run parallel to the horizontal tracks and stretch as the door closes. Torsion springs are more common on modern doors because they are safer, last longer, and provide smoother garage door balance.
Many doors use a double spring system — two torsion springs mounted side by side. This design shares the load, reduces wear on each individual spring, and gives the door a backup if one spring weakens. Every spring is rated for a specific spring cycle life, with one cycle equaling one open-and-close. Standard springs are rated for roughly 10,000 cycles; high-cycle springs can be rated for 25,000 or 50,000.
Common Signs of a Broken Garage Door Spring
Most spring failures show themselves clearly if you know what to look for. Here are the symptoms we see most often on service calls.
1A Loud Bang From the Garage
When a torsion spring snaps, all of the stored energy releases at once. Homeowners almost always describe it the same way: a loud bang or gunshot-like crack coming from the garage, sometimes loud enough to be heard from inside the house. If you hear that sound and your door later refuses to open, a broken spring is the most likely cause.
2The Garage Door Feels Heavy
Pull the red emergency release cord to disconnect the opener and try to lift the door manually. A properly counterbalanced door should rise smoothly with one hand. If it feels like dead weight, refuses to budge, or wants to slam back down, the spring system is no longer carrying the load.
3The Door Opens Unevenly
On a two-spring system, one spring can break or weaken before the other. The healthy spring keeps lifting on its side while the failed side lags behind, so the door rises crooked, twists in the tracks, or jerks as it moves. Running the door in this state quickly leads to bent tracks, frayed cables, and roller damage.
4The Garage Door Only Opens a Few Inches
Many modern openers have a built-in safety feature that detects excess strain and stops the motor. With a broken spring, the opener tries to lift the door, senses the weight is wrong, and reverses after lifting only 4–6 inches. This is one of the clearest signals that the spring — not the opener — is the problem.
5A Visible Gap in the Torsion Spring
Look at the spring mounted on the shaft above the door. A healthy torsion spring is wound tight with the coils touching each other. After a break, you'll see an obvious 2–4 inch gap somewhere along the spring where the steel separated. This is the most definitive visual confirmation of a broken spring.
6The Opener Strains, Hums, or Stalls
An opener forced to lift a door with no spring support will groan, hum loudly, or stall partway through the cycle. Continuing to run the opener under those conditions burns out the motor and gear assembly, turning a spring repair into a much larger replacement. If the motor sounds like it's working harder than usual, stop and inspect the springs.
Signs a Spring Is About to Break
Springs usually warn you before they let go. Pull the red release, lift the door halfway, and let go — a balanced door stays put; one that drifts down has weak springs. Rust on the coils (common in humid garages after spring storms), new squealing or popping from the spring itself, and a door that's slowly getting heavier are all signs the spring is near the end of its cycle life. Catching it at that stage means a scheduled replacement instead of a 7 AM emergency.
Why Broken Springs Are Dangerous
A wound torsion spring can store hundreds of pounds of force. When it fails, that energy is released in a fraction of a second — which is exactly why the bang is so loud. The danger doesn't end when the spring breaks. A door held open only by a partially failed spring or by the opener alone can fall without warning, and any attempt to remove or rewind a torsion spring without the right tools can cause severe injuries to hands, eyes, and face.
If you have any doubt, leave the door in whatever position it's in, keep people and vehicles out from underneath it, and call a professional. A safe inspection takes minutes; an injury from a snapped spring can be life-changing.
Why Homeowners Should Not DIY Spring Replacement
Garage door spring replacement looks straightforward in online videos. It isn't. Proper replacement requires the correct spring size (wire gauge, inside diameter, and length), calibrated winding bars, a steady ladder, and a precise number of quarter-turns to set the right tension for your specific door. A spring that is over-wound can snap during installation; one that is under-wound leaves the door unbalanced and overworks the opener.
On double spring systems, both springs should be replaced at the same time even if only one has broken — they wear at the same rate, and replacing only one virtually guarantees a second emergency within months. A trained garage door technician can complete the job safely in under an hour with the correct parts on the truck.
When to Call a Professional Garage Door Company
Call a garage door professional any time you hear a loud bang from the garage, see a visible gap in a torsion spring, notice the door opening unevenly, or find that the opener can only lift the door a few inches before reversing. Don't wait — every additional cycle on a damaged system risks bending tracks, snapping cables, or burning out the opener.
If you're in Richardson or anywhere in the North Dallas area, we can help. Schedule broken spring repair in Richardson, TX, book a full inspection through our garage door repair in Richardson service, or call us for emergency garage door repair if your door is stuck or unsafe right now.
Call (972) 890-8470