2026-03-19 6 min read
It usually happens without warning. You press the button on your opener, hear a loud bang, and your garage door doesn't move. Or maybe it limps halfway up and stops. Nine times out of ten, you've got a broken torsion spring. and now you're stuck, possibly with a car trapped inside, Googling what to do next.
This post is for Redwood City homeowners who want straight answers: what a broken spring actually means, what it costs to fix, whether you should attempt it yourself, and what to ask a technician before agreeing to any work.
Your garage door. whether it's on a Mount Carmel Craftsman, a mid-century ranch in Woodside Plaza, or a newer townhome in Redwood Shores. weighs somewhere between 150 and 400 pounds. The springs do essentially all of the heavy lifting. Your opener just guides the movement; the spring does the work.
There are two spring types you'll encounter:
Torsion springs sit horizontally above the door on a metal shaft. They're the standard on most modern doors and are wound under extreme rotational tension. They're more durable and longer-lasting than the alternative, but more complex (and more expensive) to replace.
Extension springs run along the horizontal tracks on either side of the door. They're simpler, less expensive, and found on older or lighter doors. including many of the single-car garage setups you'll find in the older neighborhoods west of El Camino Real.
Both types have a finite cycle life. Torsion springs are generally rated for 10,000 to 20,000 cycles. roughly 8 to 15 years of average use. If your Redwood City home has a door that gets opened four or five times a day (which is common in any household with two working adults), you're burning through those cycles faster than you might think.
Let's be direct about pricing, because this is where homeowners often get confused by wildly varying quotes.
For most residential doors in California, torsion spring replacement runs $200,$500 per spring, including parts and labor. Extension springs are more affordable at roughly $120,$200 per replacement. In the Bay Area, where labor costs run higher than national averages, expect to land toward the middle or upper end of those ranges.
A few things that affect the final number:
- Single vs. double door: Double doors need larger, heavier springs. Expect to add $15,$30 per spring. - Spring quality: Standard springs are rated for about 10,000 cycles. High-cycle springs. rated for 25,000 or even 50,000 cycles. cost more upfront but last dramatically longer, making them a smarter long-term buy for a busy household. - Same-day or emergency service: Expect a premium if you need someone out on a weekend or evening.
If a quote seems unusually low, ask specifically what cycle-rated springs are being used. A cheap spring installed today just means another repair call in a few years. Garage Door Redwood City provides upfront pricing and explains your spring options before any work begins. you can reach out to schedule an assessment if you're not sure what you're working with.
This is worth saying plainly: garage door spring replacement is not a DIY job. Torsion springs are under extreme tension. enough to cause serious injury or death if mishandled. Even experienced homeowners with solid tool skills should leave this one to a licensed technician.
Extension springs are somewhat more approachable, but they still carry significant risk if you're not familiar with the tensioning process. The potential cost savings are real when it comes to maintenance tasks like lubrication or weatherstrip replacement. but spring work is the line most professionals draw clearly.
If your door has two springs (which most do), and one breaks, replace both at the same time. Here's why: the springs were installed together and have experienced the same number of cycles. If one has failed, the other is at roughly the same point in its lifespan. Replacing just the broken one leaves you with a mismatched pair and a likely second service call within months. Replacing both during the same visit saves you money on the second labor charge and keeps your door properly balanced.
The garage door repair industry, like any service industry, has honest operators and people who will upsell you unnecessarily. Here are three questions that give you better information:
1. What cycle rating are the replacement springs? Standard 10,000-cycle springs are fine for light use. If your household uses the garage door heavily, ask about 25,000-cycle options.
2. Are you replacing the cables too? The lift cables work in tandem with the springs and take similar wear. If the springs are being swapped out, it's often worth replacing the cables at the same time. especially if they show any fraying or corrosion. In Redwood City's humid, bay-influenced air, cable corrosion is more common than in drier climates.
3. Is the door balanced after installation? A properly installed spring set should leave the door hovering at about waist height when manually lifted to that point, without floating up or falling down. Ask the technician to demonstrate balance before they leave.
If your springs are breaking on a door that's also showing significant panel damage, heavy rust, or persistent opener problems, it's worth having an honest conversation about whether repair is still the right economic call. Choosing the right garage door material for a replacement involves weighing factors like our Bay Area climate, your home's architectural style, and long-term maintenance expectations.
For newer doors in otherwise good shape, spring replacement is always the right move. But if your door is 20-plus years old and showing multiple problems, putting $300,$500 into springs on a door that needs $1,500 worth of other work in the next two years isn't great math.
You can browse our service areas page to confirm we cover your neighborhood. we serve Redwood City and the surrounding Peninsula communities, including San Carlos and Belmont.
Q: My garage door won't open at all this morning. Is it definitely the spring? A: Not always, but a broken spring is the most common cause of a completely unresponsive door. Look above the door opening. if you see a torsion spring with a visible gap or break in the coil, that's your answer. If the spring looks intact, the issue could be the opener, a cable, or a sensor. A quick inspection call will identify it fast.
Q: How long does spring replacement take? A: For a straightforward single-door torsion spring swap, a trained technician typically completes the job in one to two hours. If cables need replacement or the door requires rebalancing, add another 30,60 minutes.
Q: Are there higher-quality springs I should ask about for a home near the bay? A: Yes. For homes in Redwood Shores or near the bay waterfront, consider asking specifically for galvanized or oil-tempered springs, which hold up better in high-humidity, salt-air environments. Pairing better springs with a marine-grade lubricant applied at installation will measurably extend the service interval between replacements.