2026-06-09 7 min read A2Z Garage Doors
Most homeowners don't think about garage door springs until one snaps. Here's the truth: torsion and extension springs work completely differently, carry different risks, and cost different amounts to replace. Knowing which type you have matters before you call for a repair.
Your garage door weighs 300 to 500 pounds. Without springs, you'd need superhuman strength to lift it manually. Springs store energy and release it as you open or close the door. They're also the hardest working part of your entire system. Springs last roughly 7 to 9 years with regular use, sometimes less if you live near the bay like we do here in Hercules, where salt air accelerates rust and wear.
When a spring fails, the door becomes a dead weight. Your opener can't lift it. You're stuck. That's why understanding spring types now prevents an emergency call later.
Torsion springs sit above your garage door, wound tightly around a metal rod. When the door opens, they unwind. When it closes, they wind back up. This twisting action is where the name comes from.
Torsion springs are stronger and more durable than their counterpart. They last longer, handle heavier doors better, and take up less space. Most modern homes in Hercules and the surrounding East Bay use torsion springs. If your door was installed in the last 15 years, you almost certainly have torsion.
The trade-off? Torsion springs are more dangerous to replace. They're under extreme tension. A snapped torsion spring can whip around the rod with enough force to cause serious injury. This is not a DIY job, period.
Extension springs run along the sides of your door frame, one on each side. They stretch and contract as the door moves up and down. You'll typically find extension springs on older homes, lighter doors, or single-car garages.
Extension springs are cheaper and easier to replace than torsion springs. The tension is less extreme, which means fewer catastrophic failures. But they don't last as long, and they're not ideal for heavier doors.
Many homeowners upgrading older Hercules homes choose to switch from extension to torsion springs during a replacement. It's a smart long-term move if your door is old or you want better performance.
**Need garage door springs in Hercules today?** Call 510-592-5359. we cover same-day service across the area.
Walk into your garage and look above the closed door. If you see a tightly wound spring running horizontally across the center, you have torsion. If you see two springs running vertically along the sides, you have extension.
Don't touch either. Just observe and remember what you see. When you call for a free estimate, mention which type you spotted. It helps us prepare and give you an accurate cost quote faster.
Torsion spring replacement typically runs $200 to $400 per spring, depending on door size and spring quality. Extension springs cost $75 to $200 per spring. Labor adds $100 to $200 on top of parts. A snapped spring usually means both springs need replacing, even if only one failed, because the other is near the end of its life anyway.
Our detailed garage door springs replacement cost guide walks you through pricing in more depth and explains why both springs get replaced together.
If your springs are worn but not yet snapped, check our maintenance tips for ways to extend their life. Regular lubrication and inspection catch problems early.
A snapped spring is an emergency. Your door won't open or close safely. Attempting a DIY repair on either spring type risks serious injury. Professional technicians have the right tools, experience, and safety equipment to handle the tension safely.
Schedule a same-day estimate with Garage Door Hercules. We'll inspect both springs, determine which type you have, explain your options, and give you a firm price before we start work.
If your opener is also aging, consider our opener cost guide to see if a full system upgrade makes financial sense alongside spring replacement.
Don't wait for a spring to snap unexpectedly. If your door is over 7 years old, or if you hear creaking and grinding sounds, springs are wearing out. Call us at 510-592-5359 for a free inspection and quote. We'll identify your spring type, assess condition, and discuss the best path forward.
Spring failure is preventable with proactive maintenance. Let's keep your garage working reliably.
Can I replace just one garage door spring? Technically yes, but it's not recommended. Both springs wear at roughly the same rate. Replacing one while the other is worn means a second failure soon after. We always recommend replacing both springs together for safety and cost efficiency.
How long do garage door springs last? Torsion and extension springs typically last 7 to 9 years with normal use, or about 10,000 to 15,000 opening cycles. Salt air and humidity in the Hercules area can shorten this lifespan. Regular maintenance helps maximize longevity.
Is a snapped spring covered by my homeowner's insurance? Most homeowner's policies do not cover garage door springs. They're classified as wear-and-tear maintenance items. Check your policy details, but plan to cover spring replacement out of pocket.
What's the difference in safety between torsion and extension springs? Torsion springs are under much higher tension and pose greater injury risk if they fail suddenly. Extension springs fail more gradually. Both require professional replacement. Never attempt DIY spring work.
Can I open my garage door manually if the spring is broken? Not safely. A broken spring means the full weight of the door falls on you and the opener. Manual lifting risks dropping the door on your car, property, or yourself. Call a professional for emergency repair.