How to Inspect Garage Door Springs

Garage door springs are quietly doing one of the most dangerous jobs in your home. They counterbalance a door that weighs 150-300 pounds, making it possible for you to lift it with one hand. But all that weight is stored energy in tightly wound steel. When springs fail, that energy releases instantly. People have been seriously injured and killed by garage door springs. This is one inspection where looking is fine, but touching is not.

Why This Matters

Garage door springs are wear items. They’re rated for a certain number of cycles (open-close), typically 10,000 to 20,000. That sounds like a lot, but it averages out to 7-15 years of normal use. When they fail:

• Door becomes extremely heavy – Can’t be lifted manually
• Door may fall – If one spring breaks, the door can crash down
• Damage to door and opener – Uneven tension twists the system
• Personal injury risk – From falling doors or flying spring parts
• Stranded vehicles – Can’t get the car out

Catching wear early means planned replacement instead of emergency service.

Types of Springs

Torsion Springs

Mounted horizontally above the door opening on a metal shaft:

• More common on modern homes
• Smoother operation
• More dangerous to work on
• Usually one or two springs

Extension Springs

Mounted vertically on either side of the door, stretching as it closes:

• Older style but still common
• Visible stretching and contracting
• Require safety cables through the center
• Always come in pairs

Visual Inspection Only (No Touching)

This is a look-don’t-touch inspection. The tension in these springs can cause severe injury if they’re mishandled.

Torsion Springs (Above the Door)

1. Look for gaps: A healthy spring has coils touching. If you see gaps between coils, the spring is overstretched or failing.

2. Check the center: The stationary cone in the middle should be intact. Cracks or damage here are serious.

3. Look for rust: Surface rust is normal in humid climates, but heavy rust weakens the spring.

4. Check the cable drums: At either end of the shaft, look for frayed cables or damage.

5. Observe the shaft: Should be straight, not bent.

Extension Springs (Along the Sides)

1. Look for gaps: Coils should be uniform. Gaps indicate overstretching.

2. Check for rust: Especially at the ends where the hooks attach.

3. Inspect safety cables: These run through the spring and prevent it from flying if it breaks. They should be present and intact.

4. Look at the pulleys: Should spin freely without wobble.

5. Check attachment points: Where the spring hooks to the track and rear hanger.

Door Cables

Both spring types use cables to lift the door:

1. Fraying: Any broken strands mean replacement is needed.
2. Kinks or bends: Cable should be smooth.
3. Rust: Indicates weakening.
4. Proper winding: Cable should be neatly wound on drums (torsion) or pulleys (extension).

Operational Signs of Spring Problems

Door Feels Heavy

1. Disconnect the opener (usually a red cord)
2. Lift the door manually
3. It should stay in place and move smoothly
4. If it’s very heavy or won’t stay open, springs are worn

Door Doesn’t Open Fully

The opener strains but can’t complete the lift—springs aren’t providing enough counterbalance.

Door Closes Too Quickly

When lowered manually, it should descend smoothly. If it drops or feels too light, springs may be overstretched.

Uneven Movement

One side rises faster than the other—could indicate one failed spring on a two-spring system.

Loud Bang

A spring breaking often produces a loud noise. If you hear this, don’t use the door until it’s inspected.

Noisy Operation

Squeaking, grinding, or popping sounds during operation may indicate spring or bearing problems.

Warning Signs Requiring Immediate Attention

• Visible gaps in spring coils
• Broken or frayed cables
• Door won’t stay open
• Door is extremely heavy to lift
• Loud bang from garage
• Door appears crooked when opening
• Rust deterioration visible on springs

If you notice any of these, disconnect the opener and don’t use the door until a professional inspects it.

The Safety Rule

Inspection is DIY. Repair and replacement are NOT.

Garage door springs are under hundreds of pounds of tension. The winding and unwinding process requires specialized tools and training. DIY attempts have resulted in broken bones, lost fingers, and worse.

The cost of professional spring replacement is typically $150-300. The cost of a trip to the emergency room is much higher.

DIY vs. Call a Pro

DIY: Visual inspection, testing door balance (carefully), listening for problems.

Call a pro: Any spring adjustment, replacement, or repair. Cable replacement. Door hardware work. This is not an area to save money. Find a garage door repair service →

How Often to Inspect

• Visual inspection: Every 3-6 months
• Balance test: Every 6 months
• Professional maintenance: Every 1-2 years
• Spring replacement: Every 7-15 years (depending on cycle rating and usage)

The Bottom Line

Garage door springs are critical components that eventually fail. Your job is to watch for warning signs and call a professional before failure—not to fix them yourself. Look for gaps, rust, fraying cables, and operational changes. When in doubt, call a pro. The money you save isn’t worth the risk.