Torsion vs. Extension Springs in Los Gatos: Which Type Do You Have?
2026-09-18 5 min read
Your garage door springs are doing something most homeowners never think about until they fail. They're counterbalancing roughly 300 to 400 pounds of weight every single time you open or close the door. Two main types handle this load in Los Gatos homes: torsion springs and extension springs. Understanding which one you have isn't just technical trivia. It's the difference between a safe repair and a dangerous DIY mistake.
What Are Torsion Springs?
Torsion springs wind tightly around a metal shaft mounted horizontally above your garage door opening. When you activate the opener, these coiled springs unwind, releasing stored energy that lifts the door smoothly upward. They're the safer, more durable choice for most residential doors.
Most modern garage doors in Los Gatos use torsion springs. They last 7 to 9 years with normal use, though high-cycle doors (those opened and closed frequently) wear faster. A snapped torsion spring creates an immediate, dramatic problem. The door becomes nearly impossible to lift manually, and the opener's motor strains dangerously trying to compensate.
What Are Extension Springs?
Extension springs run vertically along each side of the door frame. Instead of twisting, they stretch and contract, extending and retracting as the door moves. Older homes, lighter doors, and some commercial setups use these springs.
Extension springs are cheaper upfront, which is why some older installations still use them. But they wear faster than torsion springs, typically lasting 5 to 7 years. When an extension spring snaps, you'll often hear a loud twang or see the spring hanging loose beside the door frame. Safety cables run through the center of extension springs for a reason: a broken spring can whip across the garage with serious force.
Why the Type Matters for Repair and Cost
If you need garage door springs in Los Gatos, the spring type determines your repair approach and cost. Torsion springs require precise tension calculations and specialized tools. Extension springs seem simpler but carry their own risks.
This is where most homeowners get into trouble. A snapped spring looks straightforward to replace until you realize that improper tension can cause the door to fall unevenly, damage the opener, or pinch fingers and hands. We've responded to emergencies where someone tried to replace an extension spring without safety cables in place. The spring recoiled and caused serious injury.
Need garage door springs in Los Gatos today? Call (669) 338-2993. We cover same-day service across the area and can diagnose which type you have during a free estimate.
How to Identify Your Spring Type
Look above your garage door opening from inside the garage. A horizontal metal shaft with springs wound around it means you have torsion springs. Springs running vertically down both sides of the frame indicate extension springs.
Don't touch or test the springs yourself. They're under extreme tension, even when the door is closed. A slip or miscalculation releases that energy instantly and unpredictably.
If you're unsure, take a photo and contact us. We'll tell you exactly what you're dealing with in minutes. For deeper information on repair versus replacement decisions, see our guide on when to repair versus replace garage door springs in Los Gatos.
When to Call a Professional
Both torsion and extension spring failures require professional service. Period. The tension in these springs is lethal. We've seen garage doors drop onto cars, damage openers worth hundreds of dollars, and injure people who underestimated the forces at play.
When a spring snaps, your door may feel stuck, operate jerkily, or refuse to close properly. Stop using it immediately. Don't force the opener. Schedule a free quote and we'll handle it safely with the right equipment and expertise.
If you're curious about what professional service actually costs, our breakdown of garage door repair estimates in Los Gatos walks you through typical pricing. Spring replacement is one of the most common repairs we field, and costs vary based on spring type, quantity, and door weight.
The Bottom Line on Spring Safety
Your garage door spring type determines how the door operates, how long it lasts, and what happens when it fails. Torsion springs are standard in modern homes because they're more reliable and predictable. Extension springs are older, cheaper initially, and riskier to work around.
Either way, never attempt to repair or replace springs yourself. The injury risk is real, and improper installation creates ongoing safety hazards. Garage Door Los Gatos can inspect your springs, tell you exactly what type you have, and handle replacement or repair with proper safety protocols. Call us at (669) 338-2993 or get a same-day estimate online.
Frequently Asked Questions
Can I replace one spring if the other is still working? No. Springs wear together. If one snaps, the other is near failure. Replacing both ensures balanced door operation and prevents the second spring from breaking mid-lift, which is dangerous and costly.
How much does a garage door spring replacement cost? Torsion spring replacement typically runs $200 to $400 per spring, while extension springs cost $150 to $300. Labor, door weight, and local factors affect final pricing. See our cost guide for more details.
What happens if I ignore a snapped spring? The door becomes dangerously unbalanced. The opener motor overworks, springs deteriorate faster, and the door may fall suddenly. You risk property damage and personal injury.
How long do garage door springs last? Torsion springs last 7 to 9 years under normal use (about 10,000 cycles). Extension springs last 5 to 7 years. Frequent use shortens lifespan. Professional maintenance helps springs reach their full life expectancy.
Is it safe to use my garage door if one spring is broken? No. Don't open or close the door. Stop using the opener. A broken spring throws the entire system out of balance and creates serious safety risks. Call for professional service immediately.
Related guides
- Garage Door Springs in Los Gatos: Cost, Repair & When to Replace - Garage Door Springs Replacement Cost in Los Gatos: What You'll Actually Pay - Garage Door Cost & Pricing in Los Gatos: What to Expect - Every garage door service we offer - Garage door service in Cupertino, CA - Garage door service in Palo Alto, CA