7 Warning Signs Your Garage Door Spring Needs Replacing

A broken spring is the #1 reason garage doors stop working. Catch these 7 warning signs early and avoid being stuck with a door that won't open.

Garage door springs are the hardest-working component in your entire door system. Torsion springs (mounted above the door) and extension springs (mounted along the sides) counterbalance the weight of the door, making it possible for your opener — and you — to lift it with minimal effort. When a spring fails, the door becomes dangerously heavy and usually won't open at all.

Most springs are rated for 10,000 cycles — roughly 7–10 years of average use. Here are the seven warning signs that yours are approaching the end of their life.

1. The Door Won't Open (or Opens Only a Few Inches)

This is the most obvious sign of a broken spring. If your opener strains and the door barely lifts, or if the opener runs but the door doesn't move, a spring has likely snapped. Most modern openers have a safety feature that prevents them from trying to lift a door without spring assistance.

2. You Hear a Loud Bang from the Garage

A snapping torsion spring makes a sound like a gunshot — loud enough to startle you from inside the house. If you hear a sudden bang from the garage and your door stops working, a spring has broken. This is common in winter when cold temperatures make metal more brittle.

3. The Door Looks Crooked or Uneven

If one side of the door is higher than the other, an extension spring on one side may have broken or lost tension. Running the door in this condition can damage the cables, tracks, and opener.

4. Visible Gap in the Spring

Look at the torsion spring above your door. If you see a gap of 1–2 inches in the coil, the spring has snapped. A healthy spring should be a continuous, tightly wound coil with no visible separation.

5. The Door Falls Faster Than Normal

Springs counterbalance the weight of the door. If the door drops quickly when you release it manually, the springs have lost tension and are no longer doing their job. This is a safety hazard — a 200-pound door falling freely can cause serious injury.

6. Cables Are Loose or Hanging

When a spring breaks, the cables that run along the sides of the door often go slack and may hang loose or pile up at the bottom of the door. Loose cables are a secondary sign of spring failure.

7. The Door Is Hard to Lift Manually

Disconnect your opener and try to lift the door manually. A properly balanced door with healthy springs should lift easily with one hand and stay in place at about waist height. If it's heavy, falls back down, or won't stay up, the springs need attention.