Torsion vs. Extension Springs: Which Does Your Glendora Garage Door Need?
2026-07-06 7 min read
Your garage door springs do one essential job: they counterbalance the weight of your door so the opener doesn't strain itself lifting 300 to 400 pounds every single time. But not all springs work the same way. The type you have matters for repair costs, lifespan, and safety. Here's what you need to know about the two main kinds.
Understanding Torsion Springs
Torsion springs sit above your garage door opening, mounted on a metal rod that runs horizontally across the top. When you open the door, these springs twist like a coil. That twisting motion stores energy and helps lift the door smoothly and evenly.
The big advantage of torsion springs is balance. They distribute weight across the entire door width, which means your door opens and closes at a steady pace. Most modern garage doors, especially heavier ones, use torsion springs. They also last longer. A quality torsion spring typically runs 7 to 9 years before needing replacement, depending on how often you open and close your door.
The trade-off is cost. Torsion springs are more expensive upfront. When one snaps, you're looking at a higher repair bill than you might expect. But here's the thing: they rarely snap suddenly if you maintain them. We see problems develop gradually, usually signaled by a door that moves slower or sounds rougher than normal.
How Extension Springs Work
Extension springs mount on both sides of your door, usually above the horizontal tracks. Instead of twisting, they stretch and contract. When the door goes up, the springs extend. As it closes, they compress back.
Older homes and lighter doors often use extension springs. They're cheaper to install initially and less expensive to replace than torsion springs. The problem is they wear faster. Extension springs typically last 4 to 7 years, and they're more prone to breaking without much warning.
If you have extension springs and one snaps, you'll notice immediately. The door becomes hard to open, or one side may hang lower than the other. This is why extension spring failures often feel like emergencies. If you've dealt with a snapped spring before, you know how frustrating it feels.
Spotting Spring Trouble in Your Glendora Home
Both spring types show warning signs before they fail completely. Listen for creaking or squeaking when the door moves. Watch the door itself. Does it move slower? Does one side rise faster than the other? Does it hesitate halfway up?
These signals mean your springs are wearing out. Don't wait. A worn spring puts extra stress on your opener and can damage the door itself. The cost to replace a spring early is far less than repairing a bent track or burned-out opener motor.
**Need garage door springs in Glendora today?** Call 626-746-1401. We cover same-day service across the San Gabriel Valley and surrounding areas.
Which Type Do You Have?
The easiest way to know is to look. Torsion springs sit horizontally above the door opening on a rod. Extension springs hang vertically on the sides, near the tracks. If you're unsure, don't try to inspect closely. Springs are under extreme tension. A mistake can cause serious injury.
We handle spring identification, repair, and replacement for residential and commercial properties throughout Glendora and nearby communities. Our spring service page outlines exactly what we cover. When you call, we can often diagnose your issue over the phone and let you know what to expect for cost and timeline.
Spring Repair vs. Replacement
Sometimes a spring just needs lubrication and adjustment. Other times, replacement is the only safe option. A snapped spring or one that's lost tension can't be safely repaired. Trying to force it or patch it leads to bigger problems.
When to replace your garage door springs depends on age, condition, and usage. If your door is 10 years old and you haven't replaced springs yet, they're probably due. If you just had one replaced, the other is likely close behind. Springs wear together. We always recommend replacing both at the same time.
The cost varies based on spring type and your door's weight. Torsion spring replacement typically costs more than extension spring replacement, but both are reasonable investments for safety and convenience. Get a free estimate to understand your actual cost.
Don't DIY This One
Spring replacement looks simple in online videos. It's not. The tension involved can snap tools, break bones, or worse. Every year, people get seriously hurt trying to save money on spring work. It's one of the few garage door jobs where hiring a professional isn't optional. It's smart.
We've handled hundreds of spring replacements across Glendora. Same-day service is often possible. Call us at 626-746-1401 or schedule a free estimate online.
Frequently Asked Questions
How long do garage door springs last? Torsion springs typically last 7 to 9 years. Extension springs wear faster, usually 4 to 7 years. Lifespan depends on door weight, usage frequency, and maintenance. Regular lubrication extends life.
What does a snapped spring sound like? A loud bang or crack, like a gunshot, often signals a snapped spring. You might hear a crash as the door suddenly drops. Some snaps are quieter but visible as a gap in the spring itself.
Can I open my garage door if the spring is broken? No. Don't force it. A broken spring means no counterbalance. The door becomes extremely heavy. Forcing it risks damaging the opener and the door itself. Call for repair instead.
Why is spring replacement so expensive? The parts themselves cost less than labor. Spring work is dangerous and requires specialized tools and knowledge. Technician safety training, liability insurance, and expertise justify the cost.
Do both springs need replacement at the same time? Yes. When one spring fails, the other is near failure too. Replacing one leaves you vulnerable to another break soon after. Replace both to avoid repeat service calls.