2026-08-25 7 min read A2Z Garage Doors
Your garage door springs are either torsion or extension type. Most Sebastopol homes use torsion springs mounted above the door. Extension springs run along the sides. The wrong diagnosis costs money. Here's how to tell which one you have and why it matters for your wallet.
Springs do the heavy lifting. They counterbalance your door's weight, making it easy to open and close. Without them working properly, your opener strains. Parts fail faster. Energy bills climb. A typical residential door weighs 300 to 400 pounds. Springs handle that load thousands of times over their 7 to 9 year lifespan.
When springs fail, the entire system stops. You can't open or close the door safely. A snapped spring isn't a "wait until next week" problem. It's a same-day repair situation, especially if you need your car out or supplies inside.
Torsion springs twist and unwind. They're mounted horizontally above your garage door opening. One or two springs sit on a metal shaft. When the door closes, springs tighten. When it opens, they release that stored energy to lift the door.
Torsion springs are stronger and more durable than extension springs. They last longer and handle wear better over time. Most modern homes in Sebastopol have torsion setups because they're safer and more reliable.
You'll see them immediately if you look above the door frame. They're thick, coiled metal cylinders. If one breaks, you hear a loud bang. That's the sound of metal snapping under pressure.
The cost to replace torsion springs runs higher than extension springs, but you get what you pay for. Better longevity means fewer service calls down the road.
**Need garage door springs in Sebastopol today?** Call (510) 319-0841. we cover same-day service across the area.
Extension springs stretch and contract. They're mounted along each side of the door opening, above the horizontal tracks. When the door closes, springs extend. When it opens, they contract and help lift.
Extension springs are cheaper to install and replace. That's why some older Sebastopol garages still have them. They work fine for lighter doors or low-use applications. But they wear faster and require more frequent maintenance.
These springs have a higher failure rate than torsion types. Safety cables run through them to catch debris if they snap. Without those cables, a broken extension spring can whip dangerously.
Extension springs also need pulley systems and are more complex to adjust. If one breaks, the door often tilts because only one side has tension left.
Walk into your garage and look straight up at the door opening. Do you see a coiled metal cylinder running horizontally across the top? That's torsion. Do you see springs running along the left and right tracks? Those are extension springs.
Torsion springs are centered above the door. Extension springs sit on the sides. The difference is obvious once you know what to look for.
If you're unsure, take a photo and call Garage Door Sebastopol for a free visual check. Knowing which type you have prevents misdiagnosis and wrong repair estimates.
Shops that don't inspect carefully sometimes quote the wrong repair. You think you're getting a torsion spring replacement but end up with an extension setup. Or vice versa. Both are functional but one doesn't match your door's original design.
When springs fail, homeowners panic and accept the first estimate. That's when confusion happens. A technician should identify your spring type before quoting a price. Our garage door repair estimate guide walks through what to expect when calling for help.
If you're weighing repair versus replacement, this post on repair versus replacement breaks down the economics. Sometimes one broken spring means both should be replaced to avoid a second failure in six months.
Extension springs cost less upfront. Torsion springs cost more but deliver better value over time. Replacement prices vary by quality and your specific door weight.
Budget for $150 to $300 per torsion spring. Extension springs run $100 to $200 each. Labor adds another $100 to $200 depending on complexity. Always get an estimate before committing.
Visit our services page to see what we offer and request a quote. Same-day availability means you're not stuck waiting around.
A snapped spring isn't a DIY fix. Springs hold enormous tension. Touching them without the right tools is dangerous. Broken springs can injure you or damage the door further.
If your door won't open, makes grinding noises, or feels heavier than normal, springs may be failing. Schedule a free quote today and let us diagnose the issue properly.
Spring problems don't get better on their own. They get worse and more expensive. The sooner you address them, the sooner you get your door working safely and the sooner you avoid damage to the opener and other parts.
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How long do garage door springs last? Most springs last 7 to 9 years with normal use. Heavy use or poor maintenance shortens that window. Climate extremes in Northern California can accelerate wear. Replace both springs at the same time to avoid uneven door movement.
Can I replace just one spring? Technically yes, but it's not smart. Springs wear together. If one is old and snapped, the other is also near failure. Replacing both costs more upfront but prevents a second emergency call within months.
What's the difference in safety between torsion and extension springs? Torsion springs are safer because they're contained above the door. Extension springs can whip violently if they snap. Safety cables help, but torsion designs eliminate that risk entirely.
How do I know if my springs need replacement soon? Listen for squeaking or grinding sounds. Watch for uneven door movement or the opener struggling to lift. If springs are 7-plus years old and making noise, replacement is coming soon. Get an estimate before failure leaves you stranded.
Should I replace my garage door springs myself? No. Spring tension is dangerous. High-pressure systems can cause serious injury. Professional replacement takes an hour and costs far less than a hospital visit. Always hire a licensed technician.