2026-03-20 6 min read
It's 7:30 in the morning and you press the button to open your garage door. The opener hums, strains, and the door barely budges. or it opens a few inches and stops. Or maybe you heard a loud bang from the garage the night before, like a firecracker going off. Either way, there's a strong chance you're dealing with a broken garage door spring.
This is one of the most common service calls Garage Door Petaluma handles across Sonoma County, and for good reason. Springs do the heavy lifting. literally. and Petaluma's climate accelerates wear in ways that catch homeowners off guard.
Most people think the electric opener is what lifts their garage door. It isn't. not really. The springs are doing the heavy work. They store mechanical energy when the door closes and release it to counterbalance the door's weight when it opens. A standard two-car garage door can weigh 200,300 pounds. Without functioning springs, your opener motor would burn out in weeks trying to lift that load on its own.
There are two types of springs you'll find on residential garage doors:
Torsion springs run horizontally above the door opening, mounted on a steel shaft. They twist as the door moves. Most modern homes. including the newer developments in areas like Westridge Knolls and Cader Farms. use this system.
Extension springs run along the horizontal tracks on each side of the door and stretch as the door closes. You'll find these more often in older homes, including some of the mid-century tract houses in Petaluma's Midtown and Adobe District neighborhoods built during the post-WWII housing boom.
To understand which type your home has and what a replacement involves, visit our services page.
Standard residential garage door springs are rated for roughly 10,000 cycles. At four uses per day, that's about seven to nine years of life. But that's under ideal, dry conditions. Petaluma's winter wet season changes the equation.
Moisture causes metal springs to rust, and rust weakens the steel, shortening a spring's lifespan significantly. The wet-dry swing. soaking winters followed by bone-dry summers. is particularly punishing because it causes metal to repeatedly expand and contract. Homes in low-lying parts of the city near the Petaluma River, or properties with garages that face prevailing winter winds, tend to see springs corrode faster than average.
If you haven't been lubricating your springs each fall (see our post on seasonal garage door maintenance for details), rust is quietly doing damage you can't see until the spring snaps.
Don't wait for the loud bang. Here are the signs that your springs are wearing out before they break completely:
1. The door feels unusually heavy when lifted manually. Disconnect the opener and try to lift the door by hand. It should feel relatively light. springs are counterbalancing most of the weight. If it feels like lifting dead weight, the springs have lost tension or failed.
2. The door won't stay open on its own. A properly balanced door should stay suspended when raised halfway. If it slowly drifts down, the springs aren't holding tension.
3. Uneven movement. one side rises faster than the other. This almost always means one spring has failed while the other is still functioning. The lopsided door puts stress on cables, tracks, and rollers. so the longer you wait, the more parts you risk damaging.
4. A visible gap in the spring coil. Look above your door opening. If you see a separation in the torsion spring. a gap of an inch or two. the spring has snapped. Do not operate the door.
5. A loud bang from the garage. When a torsion spring breaks under full tension, it releases all its stored energy at once. The sound is sharp and loud. many homeowners describe it as a gunshot or a car backfiring. If you hear this, stop using the door immediately.
6. The opener strains or makes new noises. When springs are weak, the opener compensates by working harder. You might hear the motor grinding or notice the door moving much more slowly than usual. Left unchecked, this burns out the opener motor. turning a spring replacement into a much more expensive double repair.
7. Rust or visible corrosion on the spring. Surface rust isn't just cosmetic. it weakens the metal structure of the coil. A rusty spring is a spring that's close to failing.
The honest answer: you shouldn't. Garage door springs are under enormous tension. enough to cause severe injury or death if a coil releases unexpectedly during handling. This isn't a scare tactic; it's a documented hazard that even experienced technicians treat with respect.
Beyond the safety issue, proper spring replacement requires matching the spring's wire diameter, inside diameter, and length precisely to your door's weight and size. An incorrectly sized spring will either fail prematurely or put uneven stress on the whole system.
If you're in Petaluma or the surrounding Sonoma County area and you're seeing any of the warning signs above, the right move is to book a service appointment with a qualified technician who can assess the full system. not just the spring in isolation.
This is a question that comes up on almost every spring replacement call. When one spring fails, homeowners sometimes ask to replace only the broken one and leave the other. The honest advice: replace both at the same time.
Here's why. Both springs were installed at the same time and have experienced the same number of cycles, the same weather, and the same wear. If one has reached the end of its life, the other is very close. Replacing just one means you'll likely be scheduling the same repair again within a year or two. and paying two service fees instead of one.
A professional spring replacement on a standard residential door typically takes under an hour. A good technician will also inspect the cables, rollers, and tracks while they're at it. these components work as a system, and catching a fraying cable or worn roller at the same time as the spring saves you a second visit. Our FAQ page covers common questions about what's included in a service call and typical timelines.
The Oakhill-Brewster neighborhood and the historic homes along B and D Streets often have older hardware that hasn't been touched in years. If your home falls into that category, a full system inspection alongside the spring replacement is worth asking for.
Q: My garage door spring broke overnight. Is it safe to manually open the door to get my car out? A: Technically you can disconnect the opener and lift the door manually, but it will be extremely heavy. potentially 150,300 pounds. and the door won't stay up on its own without the spring's counterbalance. There's also a risk of injury if the door drops. The safest option is to leave the door closed and schedule same-day service.
Q: How long does a garage door spring replacement take? A: For a standard single or double garage door with torsion springs, a professional technician can typically complete the job in 45 minutes to an hour. If additional hardware like cables or rollers also needs attention, add another 30 minutes.
Q: My springs aren't broken, but they look rusty. Do I need to replace them now? A: Surface rust alone doesn't always mean immediate replacement, but it's a serious warning sign. Have a technician inspect them. they'll check the coil integrity and remaining tension. In Petaluma's wet winters, rusty springs can fail quickly, and proactive replacement is almost always cheaper than an emergency call after a snap.