2026-07-22 7 min read A2Z Garage Doors
Here's what most homeowners don't realize about garage door springs: they're under extreme tension, holding roughly half your door's weight. When one fails, your whole system stops working. I've been on trucks for 15 years in the Bay Area, and spring calls are among the most urgent repairs we handle. A snapped spring won't destroy your opener or damage the door itself, but it will leave you stranded until it's fixed.
Garage door springs operate on a cycle. Every time you open and close your door, those springs work. They're engineered to handle about 10,000 cycles, which typically means 7 to 9 years of normal residential use. That's not a guess. It's math based on standard operation (roughly 3 to 5 cycles per day).
Two main types exist: torsion springs mounted above the door, and extension springs running along the sides. Torsion springs are more common in modern installations and tend to fail more predictably. Extension springs can snap suddenly with less warning, which is why I always recommend annual inspection if your home has them.
Weather plays a role too. Redwood City's coastal climate means salt air and temperature swings that accelerate rust and metal fatigue. I've seen springs fail earlier here than in inland areas.
Springs wear out naturally with age and use. But several factors speed up failure: lack of lubrication (rust develops faster), misalignment of the door (uneven stress on springs), and cheap replacement springs installed by unlicensed techs (wrong gauge wire means shorter lifespan).
If you notice your door moving unevenly, making unusual creaking sounds, or becoming harder to open, springs are likely weakening. Don't ignore these signs.
A completely snapped spring is unmistakable. Your door won't open, or it opens partway and stops. The door will feel heavier than usual. You might hear a loud bang or crack when it breaks, especially with torsion springs.
Here's the critical part: never try to force a door with a broken spring open. You'll damage the opener and possibly injure yourself. The door can fall unexpectedly if the spring can't support it.
If you suspect a snapped spring, don't use the door. Call a professional same-day service right away. This isn't a repair you should attempt yourself, even if you're handy. Spring replacement requires specialized tools and knowledge of proper tension adjustment.
**Need garage door springs in Redwood City today?** Call (626) 507-4779. we cover same-day service across the area.
Most homeowners ask two questions: how much, and how fast? I'll be honest on both.
A single torsion spring replacement typically runs $250 to $400, depending on the spring's size and grade. Extension springs are usually $150 to $300 each. Labor is included in those estimates. If both springs need replacement (which I recommend, since the second one is likely near the end of its life too), expect $400 to $700 total. Check our detailed pricing breakdown for Redwood City garage door work to understand what goes into these numbers.
Same-day service is possible if you call before 2 PM on weekdays. We stock the most common spring sizes locally, so we can handle most jobs without ordering parts. The actual replacement takes 1 to 2 hours, depending on whether we're replacing one or both springs.
If your door opener is also aging, this is a good moment to evaluate whether replacement makes sense. Check out our guide on garage door openers for context on whether repair or replacement is smarter.
Spring failure isn't totally preventable, but you can slow it down. Lubricate your springs and hardware twice per year with a silicone-based lubricant. Never use WD40, which attracts dust and actually accelerates wear.
Keep the door balanced. A properly balanced door (test by opening it halfway and letting go; it should stay put) puts even stress on both springs. Misalignment is a common reason springs fail early.
Annual professional tune-ups catch early wear. We can spot a spring losing tension before it snaps, giving you time to plan replacement rather than face an emergency. See what's involved in routine garage door maintenance.
If your door is operating normally but your springs are 7 years old or older, schedule an inspection. If you've already had a snapped spring, don't wait for the second one to fail. Replace both at once. It's more cost-effective than another service call in three months.
Need a same-day estimate? Contact Garage Door Redwood City or call (626) 507-4779. We'll diagnose the issue, give you a firm price, and get you back in operation fast.
How long does a garage door spring last? Most springs last 7 to 9 years with standard residential use (about 3 to 5 cycles daily). Frequency of use, maintenance, and climate affect actual lifespan. Springs don't wear out gradually; they typically fail suddenly once they reach their cycle limit.
Can I replace a garage door spring myself? No. Springs are under extreme tension and can cause serious injury if mishandled. Improper installation also creates safety hazards and voids warranties. Always hire a licensed professional for spring replacement and tension adjustment.
What's the difference between torsion and extension springs? Torsion springs sit above the door and twist to support weight. Extension springs run along the sides and stretch. Torsion springs are more predictable, fail less suddenly, and are standard in modern homes. Extension springs can snap without warning but are less common in newer installations.
Do I need to replace both springs at once? Yes, I recommend it. Both springs are the same age and experiencing the same wear. Replacing only one means the second will fail soon after, costing you another service call and downtime.
Will my garage door opener break if a spring snaps? Not directly. But if you try to force the door open with a broken spring, you'll damage the opener's motor and gears. The opener isn't designed to lift the full door weight alone.