Garage Door Springs: Everything California Homeowners Need to Know About Replacement, Cost, and Safety

My phone rang at 5:47 am on a Wednesday. Guy in Escondido, his torsion spring snapped during his first open of the morning. He was standing in the garage looking at a door that weighed 280 pounds and wouldn’t budge, with his truck trapped inside. He had a job site to get to in forty minutes. I told him I could be there in an hour. He said some words I won’t repeat, then asked me to please hurry. That’s the reality of broken garage door springs in California — they don’t wait for a convenient time. Here’s everything you need to know about springs, from how they work to what replacement actually costs.

Torsion Springs vs. Extension Springs: What’s the Difference

If you’ve got a door installed in the last 15-20 years, it almost certainly has torsion springs — those horizontal coiled springs mounted on a steel shaft above the door opening. Torsion springs work by twisting (torque) to store energy as the door closes and releasing that energy to counterbalance the door’s weight as it opens. A properly sized torsion spring makes a 200-pound door feel like it weighs about 10 pounds to the opener motor.

Extension springs are the older style — you see them running horizontally along the side tracks on each side of the door. They stretch as the door closes and contract as it opens. Extension springs are common on older California homes, particularly single-car garages built before 1995. They’re not inherently worse, but they require safety cables threaded through them (code requirement in California) so that if the spring breaks, it doesn’t fly across the garage like a projectile. If you’ve got extension springs without safety cables, get cables added — it’s a cheap, important safety fix.

Why Springs Break

Springs don’t break randomly. They break because they’ve been cycled too many times. A standard residential torsion spring is rated for 10,000 cycles. One cycle is one open and one close. If your family opens the garage door four times a day — once on the way out in the morning, once on the way back, and the same for a second vehicle — that’s about 1,500 cycles per year. At that rate, a 10,000-cycle spring lasts about 6-7 years.

You can buy 25,000-cycle springs (sometimes called “high-cycle” or “commercial-grade” springs) for not much more money — typically $50-$100 more per spring at the part level. I recommend them on every job unless the homeowner explicitly declines. The labor is the same, so the cost difference is minimal but the service life difference is significant.

Other factors that accelerate spring failure: rust (very common in coastal California — Oceanside, Carlsbad, Long Beach), lack of lubrication, improper spring sizing, and springs that were already worn when an opener was replaced and the tech didn’t bother to swap them out.

The Real Cost of Spring Replacement in California

Let me give you actual numbers because this is where a lot of homeowners get taken advantage of. The spring itself — a standard residential torsion spring — costs $30-$60 at a supply house. I pay about $45 for a mid-grade spring and about $75 for a high-cycle version. The labor to replace a single torsion spring on a standard 7-foot door is about 45 minutes for an experienced tech.

Reasonable pricing in the California market: $150-$250 for a single spring replacement on a standard door. $250-$400 for both springs (which you should do — more on that in a second). Add $50-$100 for a high-cycle upgrade. Emergency/after-hours service typically adds $75-$150 to the base price. If someone quotes you $400+ for a standard single-spring replacement during business hours, they’re gouging you. If someone quotes you $79 and says they’ll be there in 20 minutes, read the reviews carefully — there are companies that bait with low prices and then find reasons to charge more once they’re at your house.

Should You Replace Both Springs at Once?

Every single time, yes. Here’s why: springs fail at roughly the same rate because they’re the same age and they’ve done the same number of cycles. If one broke, the other is close behind. If I replace one and leave the other, I’m typically getting a callback within 3-6 months when the second one goes. The homeowner pays another service call fee, and we have to do the whole job again. Replacing both at once costs maybe $50-100 more in parts and saves a full labor charge. It’s a much better deal for everyone.

The only exception is when one spring broke very early due to a manufacturing defect or an accident (like something falling on it), and the other spring is recent and clearly has plenty of life left. That’s rare, but it happens.

Can You Open the Door With a Broken Spring?

Manually, yes, if you absolutely have to. But I want to be clear about what you’re doing: lifting a door that’s completely counterbalanced by springs that are no longer functioning means you’re lifting the full dead weight of the door, which could be 150-300+ pounds for a double-wide steel door. You need at least two people, you need to lift carefully, and you should not try to use the opener to do it — the opener motor is not designed to lift the full weight of the door. It will burn out or damage the drive mechanism.

Engage the emergency release (red cord), have two people grip the door on both sides, lift together, and secure it open with locking pliers on the track below the bottom roller. Get it fixed that day or the next day — don’t leave it like that for a week. And for the love of everything, don’t let anyone stand or park under a door that’s being held up only by the rollers with no spring tension. One bump and that thing comes down fast.

Choosing the Right Replacement Spring

Springs are sized by wire diameter, inside diameter of the coil, and length. Getting the sizing right is critical — an undersized spring won’t fully counterbalance the door (putting strain on the opener), and an oversized spring will make the door rocket upward and create its own safety hazard. A competent tech will measure the door dimensions and weigh or estimate the door weight to spec the right spring. If someone is just looking at the old spring part number without measuring, that’s acceptable if the door and spring configuration haven’t changed. If they just grab a “standard” spring without any measurement or assessment, find someone else.

For most California homes with a standard 16×7 steel double-garage door, you’re typically looking at a spring with about .250 wire diameter, 2″ inside diameter, and 28-32″ length. But that varies significantly with door weight — insulated steel doors, solid wood doors, and composite doors all have different weights. Always let the tech verify sizing rather than guessing.

Frequently Asked Questions