The loud-bang clue
A torsion spring can release stored energy with a sharp bang. Homeowners sometimes mistake the sound for something falling in the garage. The door may still look closed afterward, but the lifting assistance has changed.
The door opens only a few inches
An opener may begin lifting the door and then stop because the door has become too heavy. Continuing to press the control can strain the opener and related hardware.
Visible spring separation
A torsion spring mounted above the door may show a clear gap after it breaks. Extension springs can stretch, separate, or leave cables loose. Visual checks should be made without touching the spring, cable, drum, bracket, or door.
Why professional sizing matters
Replacement springs must match the door’s weight, dimensions, track configuration, and cycle requirements. Incorrect spring selection can leave the door poorly balanced and place stress on the opener and hardware.
What to tell a service professional
- What happened immediately before the failure
- Whether the opener makes a sound or moves the door
- Whether the door is level, crooked, open, or closed
- Any loud bang, impact, loose cable, or off-track roller
- The opener brand and approximate system age, when known