Garage Door Springs in San Francisco: Torsion vs. Extension (And Why One Failed Today)
2026-08-18 5 min read
In our years serving San Francisco, we've seen this problem again and again: a homeowner wakes up to a garage door that won't budge, calls us in a panic, and learns their springs have failed. Garage door springs in San Francisco come in two main types, torsion and extension, and understanding which one you have (and when it's dying) can save you from a costly, dangerous breakdown. This post explains the difference, why springs fail, and what to do when yours does.
What Are Garage Door Springs, and Why Do They Matter?
Your garage door weighs 300 to 500 pounds. Without springs, you'd need superhuman strength to open it manually. Springs store and release energy, counterbalancing that weight so your opener can do its job safely and smoothly.
Springs last roughly 7 to 9 years under normal use (about 10,000 to 15,000 open/close cycles). Most homeowners replace them once or twice in their home's lifetime. When they snap, the door becomes a safety hazard and a headache.
Two types carry nearly all residential garage doors: torsion springs and extension springs. The location and mechanics differ, and so does the replacement cost and risk level.
Torsion Springs: The Coiled Powerhouses
Torsion springs sit horizontally above your garage door opening, mounted on a shaft. As the door closes, the spring winds up (stores torque). As you open it, the spring unwinds, releasing that stored energy to lift the door.
These springs are quieter, more durable, and safer than extension springs. They typically handle the weight more evenly across the door's width. In San Francisco's mild climate, torsion springs hold up well because temperature swings don't stress them as much as they do in hotter or colder regions.
The downside: they cost more to replace (usually $200 to $400 per spring, plus labor). But their precision and longevity make them worth it. If your door has a single torsion spring centered above it, that's your setup.
Extension Springs: Budget Friendly, But Riskier
Extension springs run horizontally along each side of the door opening, just inside the frame. They stretch when the door closes and contract when you open it. Think of them like rubber bands under tension.
They're cheaper to buy (often $100 to $150 each) and easier to install, which appeals to budget-conscious homeowners. But they wear faster than torsion springs and come with a hidden danger: when one snaps, the door can fall suddenly. A snapped spring can pinch fingers, drop on a parked car, or slam a child in the face.
Safety cables run alongside extension springs specifically to catch them if they break, but that cable only works if it's installed and maintained correctly. We've rolled up to homes in the Mission District and Sunset where a snapped spring damaged a vehicle or worse.
How to Know Your Spring Type (And When It's Dying)
Look above your door from inside the garage. Do you see one thick, coiled spring in the middle? That's torsion. Do you see two springs running along the sides? Those are extension springs.
A dying spring shows these warning signs: grinding or squeaking noises during operation, slower door movement, uneven door alignment, or a door that refuses to open at all. If you hear a loud bang or explosion sound, a spring has likely snapped. Stop using the door immediately and call a professional.
The Real Cost of DIY Spring Replacement
Some homeowners try to replace springs themselves after watching YouTube videos. We don't recommend this. Springs are under extreme tension. A slip, miscalculation, or misaligned winding can cause the spring to whip and cause serious injury. Even pros have been hurt by poorly handled springs.
Same-day professional replacement costs $150 to $500 depending on spring type and whether one or both need replacement. That's far less than an emergency room visit or a new car door.
**Need garage door springs in San Francisco today?** Call (415) 805-9854. we cover same-day service across the area.
Why Preventive Maintenance Saves Money
Regular lubrication and inspection can extend spring life by a year or two. Our Essential Garage Door Maintenance Checklist for Homeowners walks through the steps you can safely do yourself without touching the springs.
We also recommend scheduling an annual inspection with a professional. For about $100, we'll evaluate your spring health, check cable tension, and catch wear before it becomes a failure. Many of our clients in the Richmond and Presidio neighborhoods have done this for years and avoid surprise breakdowns.
If your door is already struggling, don't delay. We offer free estimates to diagnose which spring type you have and what replacement will cost. Schedule a free quote today and let us handle the tension (literally).
When to Call a Professional
A snapped spring isn't a DIY scenario. Your door becomes a heavy, unpredictable object that can cause injury or property damage. Our team at Garage Door San Francisco carries both torsion and extension springs in stock and can often arrive for emergency garage door service within hours.
If your springs are nearing the end of their lifespan (you've had them 7+ years), replacing both at once prevents a second failure a few months later. We can explore our full spring replacement service and available options on our main services page.
Garage door springs fail without warning. But professional help doesn't have to. Call us today.
Frequently Asked Questions
How long do garage door springs last? Garage door springs typically last 7 to 9 years with normal use, roughly 10,000 to 15,000 cycles. Factors like climate, humidity, and frequency of use affect lifespan. Regular lubrication can add a year or two.
Can I replace one spring if the other is fine? We recommend replacing both torsion springs together, even if only one snapped. The remaining spring has equivalent wear and will fail soon after. Extension springs can sometimes be replaced individually, but both should be evaluated.
Why do garage door springs cost so much to replace? The cost reflects labor complexity, the precision required, and the safety risks involved. A professional must balance tension accurately to avoid damage or injury. DIY attempts often create bigger, costlier problems.
Is it safe to use my garage door if one spring is broken? No. A snapped spring means the door's weight isn't balanced, increasing fall risk and strain on the opener. Stop using it and call a professional immediately to prevent injury or property damage.
What's the difference between a torsion and extension spring for my garage door? Torsion springs sit horizontally above the door and wind to store energy. Extension springs run along the sides and stretch. Torsion springs are safer, last longer, and cost more. Extension springs are cheaper but wear faster and pose greater safety risks when they fail.