2026-07-02 7 min read A2Z Garage Doors
Here's what most homeowners don't realize about garage door springs: you probably have one of two types, they fail in completely different ways, and the cost to replace them depends on which one snapped. I've been pulling trucks to San Fernando driveways for 15 years, and I'd say eight out of ten callers have no idea whether they're sitting on a torsion or extension spring setup. That knowledge gap costs money.
Your garage door weighs between 300 and 500 pounds. Something has to counterbalance that load, or your opener burns out trying to lift dead weight. That's where springs come in.
Torsion springs mount horizontally above your door opening. They twist (torsion means "twisting"), storing energy as they coil and uncoil. Most newer homes and heavier doors use torsion springs. They're safer, quieter, and last longer.
Extension springs hang vertically on each side of the door track. They stretch and contract, using pulleys and cables to help lift the door. Older homes, lighter doors, and retrofit installations often use extension springs. They're cheaper upfront but fail faster.
Here's the real difference: a snapped torsion spring means your door won't budge without the opener straining. A snapped extension spring often causes uneven door movement or complete failure. Both situations require professional repair. Neither is a weekend DIY fix.
Springs last seven to nine years under normal use. That's one complete cycle roughly every three days in a typical household. Temperature swings in San Fernando, especially during those brutal 110-degree summer days and cooler desert nights, accelerate wear.
Rust eats springs. Lack of lubrication eats springs. Heavy use eats springs. If you're opening your door five, six, ten times daily, you're shortening that lifespan significantly.
The cost difference between torsion and extension replacement is real. Torsion springs run higher because they're more complex to install and require precise torque calculations. Extension springs cost less, but you're replacing them sooner. Over a decade, the math often favors torsion.
**Need garage door springs in San Fernando today?** Call (424) 380-7408. We cover same-day service across the valley and the surrounding areas.
You hear a loud bang or snap. Sometimes it's a metallic twang that echoes through your garage. Your door either won't open at all or opens unevenly, with one side dragging. The opener light might stay on, humming uselessly. That's your cue to stop pressing the button. Forcing it when a spring is broken can damage the opener, the door, or worse.
This is where safety matters. A broken spring means the door loses its mechanical advantage. If someone is under it, or a child reaches up to "help" close it, the results are serious. I've seen finger injuries and crushed hands from doors without functioning springs. It's not hypothetical.
If you spotted these warning signs before the spring snapped, you're ahead of most homeowners. We wrote about that in our guide to spring replacement warning signs, and it's worth a read if you're not sure whether yours are at risk.
A torsion spring replacement typically runs $200 to $400 per spring, depending on size and weight rating. Extension springs run $100 to $200 per spring. Labor adds another $150 to $300. That's real money, but it's less than what you'll spend on a new opener or door if you let it sit broken.
San Fernando homeowners sometimes call asking for an estimate without mentioning the spring type or door weight. I can't quote accurately without seeing it. What I can promise is transparency. Garage Door San Fernando provides a free estimate, usually same-day if you call early enough.
Some companies bundle spring replacement with safety inspections. That's smart. While we're there replacing a spring, we check your photo eyes and auto-reverse safety features. A functioning safety system prevents injury if something goes wrong during future use.
Replace springs yourself? I'll be honest. You shouldn't. Springs are under extreme tension. Releasing that tension incorrectly can cause serious injury. The tools are specialized. The measurements must be exact. One miscalculation and your door binds, strains the opener, or worse.
This isn't like changing a car battery. This is a job for someone with the right equipment and experience. We can schedule a free quote and handle it in an afternoon. Most spring replacements take two to three hours.
The heat and wind damage we see in Southern California accelerates spring failure. We covered that in depth here. If you're in a valley location, outdoor storage area, or high-wind zone, inspect your springs annually.
Your garage door springs keep your door balanced and safe. When one fails, don't wait. Call (424) 380-7408 for same-day service. We'll identify your spring type, quote the cost accurately, and have you back in business.
How do I know if my garage door has torsion or extension springs? Look above the door opening. Torsion springs are horizontal, centered, and look like a thick coiled rod. Extension springs hang on pulleys alongside the tracks. If you can't see clearly, a technician can confirm in seconds.
Can I replace one spring if both are broken? Technically yes, but it's not ideal. Paired springs should have similar wear. If one failed, the other is likely near failure. Replacing both together costs more upfront but prevents a second emergency call in weeks.
How often should garage door springs be replaced? Springs typically last seven to nine years with normal use (three to five cycles daily). Heavy use shortens that. Annual inspection helps catch wear before failure.
What does a broken spring cost to fix? Torsion spring replacement runs $350 to $700 total (parts plus labor). Extension springs run $250 to $500 total. Cost depends on door weight, spring size, and local labor rates.
Why is professional replacement necessary? Springs are under 200+ pounds of tension. Improper release causes serious injury. Special tools and measurements are required. Professional installation includes warranty and safety checks.