2026-03-25 6 min read
You push the button on a Monday morning and nothing happens. Or the door lurches halfway up and stops. Or you hear a loud bang from the garage that sounds like a gunshot. If any of those describe your morning, there's a good chance you have a broken garage door spring.
It's one of the most common calls we get from San Anselmo homeowners. and one of the most misunderstood repairs. People often think a door that won't open means a dead opener battery or an electrical problem. More often, it's the spring. Here's what you actually need to know.
Garage door springs are rated by cycle count. A standard torsion spring is designed for roughly 10,000 cycles. one cycle being one full open and one full close. If you use your garage door four times a day, that spring will reach its rated lifespan in about seven years. Higher-cycle springs rated for 20,000,30,000 cycles are available and worth the upgrade if you plan to stay in your home long-term.
What accelerates that timeline here in Marin County is the climate. San Anselmo's winters bring persistent humidity that hovers around 77,80%, and the wet season runs from November through April. That sustained moisture causes metal fatigue and rust to develop on spring coils faster than in drier climates. A spring that might last eight years in Sacramento or Fresno can show signs of failure in five or six years in the Ross Valley. Homeowners in hillside neighborhoods like Sleepy Hollow, where fog lingers longer in the mornings, see this wear even more pronounced.
If you're already noticing grinding or squeaking when your door moves, check our list of warning signs your garage door needs professional repair. a stressed spring often signals itself before it breaks.
Before talking about cost, it helps to know what type of spring system your door uses, since it affects both the price and the complexity of the repair.
Torsion springs mount horizontally above the door opening and coil around a metal shaft. They're the most common type in newer homes and are generally considered safer and more durable. A torsion spring system typically costs $150,$350 to replace for a single door, including labor.
Extension springs run along the horizontal tracks on either side of the door and stretch to store energy. They're more common on older, lighter doors and are less expensive to replace. usually $120,$200 for a standard single door. However, they have a shorter lifespan and carry a higher risk of causing injury or property damage if they snap, since they're not contained to a shaft.
In California, labor rates run on the higher end of national averages due to local cost of living, so expect quotes in San Anselmo and nearby San Rafael to reflect that. If a company quotes you significantly under these ranges, ask what's included. parts quality and warranty matter a lot with springs.
If only one spring has broken, you might assume you only need to replace that one. Most experienced technicians will recommend replacing both. Here's why that's not just an upsell:
Springs on the same door are installed at the same time and experience the same number of cycles. If one breaks, the other is usually close behind. Replacing both during a single service visit means you pay one labor fee instead of two, and you avoid a second failure. likely at the least convenient moment. It's a straightforward call that saves money and hassle over time.
Spring replacement is not a DIY job. The springs on a standard residential garage door are under several hundred pounds of tension. Releasing that tension without the proper winding bars and technique can cause the spring to snap, sending a metal rod or coil across the garage at dangerous speed. This is a repair where the labor cost is genuinely worth every dollar.
A qualified technician will:
1. Disconnect the opener so the door can be worked on manually 2. Secure the door in place before releasing spring tension 3. Remove the broken spring and measure the replacement specs (wire diameter, inside diameter, and length all matter for proper door balance) 4. Install the new spring and set the correct tension 5. Test the door balance manually and then with the opener connected 6. Check cables, drums, and hardware for any secondary wear while they're already on-site
That last step is important. A spring replacement is a good opportunity to have the full system inspected. Explore our services page to see what a complete tune-up includes. addressing minor issues during the same visit is almost always cheaper than a separate service call later.
If your spring has broken and your door won't operate:
- Do not try to force the door open manually. A door without a functioning spring is extremely heavy. typically 150,300 pounds depending on size and material. Injury is a real risk. - Do not try to operate the electric opener. Forcing the motor to work against a dead-weight door can burn out the opener. - Disconnect the door from the opener using the red emergency cord and leave the door closed until a technician can assess it. - Call for service promptly. Unlike some garage door issues, a broken spring renders the door essentially inoperable and is a security concern if the door is stuck partially open.
Garage Door San Anselmo offers prompt service throughout the area, including Ross, Fairfax, and the surrounding Ross Valley communities. If you're dealing with a broken spring or just want a professional set of eyes on your system before the next rainy season, reach out to schedule a visit.
Q: How do I know if it's the spring that's broken and not the opener? A: Pull the red emergency release cord to disconnect the opener, then try to lift the door manually. If the door feels impossibly heavy and won't lift more than a few inches, a broken spring is almost certainly the cause. If the door lifts smoothly by hand but the opener still won't engage, the problem is likely in the opener itself.
Q: How long does a spring replacement take? A: For a straightforward torsion spring replacement on a standard single door, a qualified technician typically completes the job in 45 minutes to an hour. If both springs need replacing or cables show wear and need attention, plan for 90 minutes.
Q: Are higher-cycle springs worth the extra cost in San Anselmo? A: Given the local humidity and the pace at which metal components corrode in Marin County's wet winters, upgrading to a higher-cycle spring. typically rated at 20,000,30,000 cycles. is a worthwhile investment for most homeowners. The upfront cost difference is modest, and the longer lifespan reduces both the frequency of repairs and the cumulative labor expense over time. For families in Sleepy Hollow or other areas where morning fog and dampness are especially persistent, it's a practical choice that pays off.