2026-09-06 7 min read
A snapped garage door spring leaves you stuck at home or locked out of your garage. The two main types are torsion and extension springs, and knowing which one you have helps you understand repair costs and safety risks. Most homes in San Marcos use one or the other, and they fail in completely different ways.
Torsion springs sit above your garage door, wound tightly on a metal shaft. When your door opens, they unwind to counterbalance the weight. When it closes, they wind back up. Think of them like a clock spring on steroids.
These springs carry massive tension. A standard residential torsion spring can hold 200 to 400 pounds of stored energy. That's why you never, ever try to adjust or replace one yourself. I've seen garage doors slam down hard enough to crack concrete. It's not worth the risk.
Torsion springs typically last 7 to 9 years with normal use, though some last longer. A single spring usually costs between $150 to $300 for parts, plus labor. The counterbalance they provide makes your opener work efficiently, which extends the opener's lifespan too.
Extension springs run horizontally along both sides of your garage door opening. They stretch and contract as the door moves up and down. You'll often see them mounted on pulleys and cables.
Extension springs are less dangerous than torsion springs, but they still pack a punch. If one snaps, the cable can whip around unpredictably. The door won't fall suddenly like it might with a torsion failure, but it becomes extremely heavy to lift manually.
These springs also last roughly 7 to 9 years. They're often cheaper to replace than torsion springs, usually running $100 to $200 per spring. Many homes use two extension springs for balance, so plan for potential dual replacement.
**Need garage door springs in San Marcos today?** Call 760-933-5882. we cover same-day service across the area.
Walk into your garage and look up above the door. If you see a tightly wound metal coil running left to right above the door frame, you have torsion springs. If you see springs attached to cables running down the sides of the opening, you have extension springs.
Not sure? That's fine. When you call us for an estimate, we'll identify your system and explain exactly what's needed. I've been doing this for 15 years, and every garage is different.
A sagging door that won't open smoothly is the most common warning sign. The door might feel heavier than usual when you operate it manually. You might hear creaking or popping sounds coming from above the door. Some people report their opener working harder than normal before a spring snaps completely.
If your door suddenly won't open at all, spring failure is high on the list of culprits. Check our guide on 7 warning signs your garage door needs professional repair to learn about other red flags.
Springs store enormous amounts of energy. If you accidentally release that energy while working on them, you could suffer serious injury. Fingers, hands, and faces have all been hurt by springs suddenly releasing. Hospitals in the San Marcos area see garage door injuries regularly, many from DIY attempts.
Professional technicians have the right tools, experience, and insurance. We replace springs safely and often warranty the work for a year. A same-day visit costs far less than an emergency room bill.
Most single spring replacements run $200 to $400 all in, depending on the type and your door's weight. Dual springs cost more. We always provide a free estimate before starting work, so there are no surprises. Schedule a free quote today to get exact pricing for your door.
Many homeowners also replace their opener or do preventive maintenance at the same time. Check our complete garage door maintenance checklist to see what else might help your system last longer.
Spring problems are not something to delay. A failing spring makes your entire system work harder and can damage your opener. Once a spring snaps, your door becomes a safety hazard.
Contact Garage Door San Marcos or another licensed professional right away. We offer same-day appointments across San Marcos and nearby Escondido. Get a same-day estimate by calling 760-933-5882 or booking online.
Don't wait until your door gets stuck or falls unexpectedly. Spring replacement is fast, affordable, and keeps your family safe.
How long do garage door springs typically last? Most residential springs last 7 to 9 years under normal use (about 3 to 5 cycles per day). Lifespan depends on door weight, frequency of use, and maintenance. Springs that cycle more often wear out faster.
Can I replace just one spring if I have two? It's technically possible, but we recommend replacing both at the same time. Springs wear at similar rates, so the other will likely fail soon after. Replacing both saves you labor costs and a second service call within months.
What's the difference in cost between torsion and extension springs? Extension springs are usually 20 to 30 percent cheaper than torsion springs for parts and labor. However, your specific door weight and setup determine the final cost. Always get a quote for your exact situation.
Is a snapped spring an emergency? Yes. Stop using your door immediately. A snapped spring can cause the door to fall unexpectedly or get stuck, creating a safety hazard. Call a professional right away for same-day repair.
Why shouldn't I replace springs myself? Springs store hundreds of pounds of force. Accidental release can cause severe injury, including cuts, fractures, or eye damage. Professional tools and training are required. Insurance won't cover DIY injuries either.