2026-04-15 7 min read
If you've ever walked into your garage in the morning and hit the button only to hear a loud bang or watch the door barely budge, there's a good chance a spring has failed. It's one of the most common garage door problems we see in Petaluma. and one of the most misunderstood. Here's a straight-talk guide to garage door springs: what they do, when they fail, and why you should never try to fix them yourself.
Garage door springs do the heavy lifting. literally. Your door can weigh anywhere from 150 to 400 pounds depending on material and insulation. The springs offset that weight so your opener motor only has to do a fraction of the work. When a spring is failing or broken, that weight falls entirely on the opener, which can burn it out quickly.
There are two main types you'll encounter in Petaluma homes:
- Torsion springs. mounted horizontally above the door opening. These are the standard on most modern doors in East Petaluma's newer subdivisions like Cader Farms and Westridge Knolls. - Extension springs. run along the horizontal tracks on each side. More common in older homes, including some of the classic Craftsman and Victorian-era houses you'll find in West Petaluma near the historic downtown.
Springs rarely fail without giving some warning first. Watch for these signals:
One of the earliest signs of a weakening spring is that the door suddenly feels much heavier when you lift it manually. When springs lose tension, the opener works harder and the door feels sluggish. A door that sags lower on one side than the other is another red flag. it means one spring is carrying more load than the other and the whole system is out of balance.
Modern openers are designed with a safety feature: if the spring tension is wrong, the opener senses the excess weight and stops. If your door lifts only 3,6 inches and quits, that's often the spring, not the opener itself.
A snapped torsion spring sounds like a gunshot inside the garage. Many Petaluma homeowners describe hearing it from inside the house and assuming something fell. If you hear that sound and then your door won't operate, check the spring above the door. a 2,3 inch gap in the coil is the giveaway that it's broken.
Petaluma's Mediterranean climate. with wet winters and warm, dry summers. can accelerate spring wear. Moisture from our rainy season (February tends to be the wettest month) can cause rust to develop on spring coils. Rust weakens the metal and causes friction that shortens spring life significantly. If your springs look corroded, they're living on borrowed time.
Most torsion springs are rated for around 10,000 cycles. one cycle being the door opening and closing once. If you use your garage door as your main entry and exit point (common in Petaluma homes where the garage faces the street), you might be cycling it 4,6 times a day. At that rate, a standard spring lasts roughly 5,7 years.
High-cycle springs. rated for 25,000 to 50,000 cycles. cost more upfront but can double or triple that lifespan. If you're already paying for a spring replacement, it's worth asking about upgrading.
This question comes up constantly. The honest answer: replace both, even if only one has snapped. Springs on a door are typically installed at the same time and wear at the same rate. If one has failed, the other is probably not far behind. Replacing both at once saves you a second service call within a year or two. and keeps your door balanced in the meantime.
We understand the impulse to save money. But garage door spring replacement is genuinely dangerous. Torsion springs are wound under hundreds of pounds of tension. If you release that tension incorrectly. without the right winding bars and experience. a spring can uncoil violently and cause serious injury. This isn't a scare tactic; it's the reason professional garage door technicians treat this job with respect.
For everything else on your garage door, check out our full list of services to see what's covered. But for springs, please call a professional.
Costs vary depending on the spring type, size, and whether you're upgrading to high-cycle springs. Generally speaking:
- Standard torsion spring replacement (both springs): $150,$300 including labor - High-cycle torsion spring upgrade: $200,$400 depending on door weight - Extension springs (pair): $100,$200
Get a quote before committing. A reputable company should be able to give you a firm price on-site before any work begins. If you're ready to schedule, reach out to Garage Door Petaluma for a straightforward assessment.
If you live in one of the older West Petaluma neighborhoods near the Petaluma River. where homes date back to the early 1900s. your garage may still have the original extension spring setup. These are worth inspecting carefully; older cable and pulley hardware that accompanies these systems can fail alongside the springs and should be replaced at the same time.
For newer East Petaluma homes in the College District or near Sonoma Mountain, torsion springs are standard, and high-cycle options are a smart investment given how frequently suburban families use the garage as the main entrance. The same advice applies if you're in nearby Santa Rosa. spring wear is a universal issue across Sonoma County, not just here.
Q: Can I still use my garage door if a spring is broken? A: Technically the door may still move, but you shouldn't use it. Operating the door with a broken spring puts enormous strain on your opener motor and cables, and the door can fall unexpectedly. Disconnect the opener and leave the door in place until a technician arrives.
Q: How do I know if I have torsion or extension springs? A: Stand inside your garage and look at the door hardware. If you see a single (or double) horizontal spring mounted above the door on a metal tube, that's a torsion spring. If you see springs running along the horizontal tracks on each side of the door, those are extension springs.
Q: My opener sounds like it's working but the door barely moves. is it the spring? A: Very likely, yes. The opener is engaging but struggling against the full, unassisted weight of the door. Check for a visible gap in the torsion spring above the door, or call for an inspection. Don't keep running the opener. you'll burn out the motor.