2026-03-19 6 min read
Most Rolling Hills homeowners never think about their garage door springs until the morning the door simply won't open. You press the button, hear the opener strain, and nothing happens. or worse, you hear a loud bang from inside the garage. That bang is almost always a spring letting go.
Springs are the unsung workhorses of any garage door system. Understanding how they work, why they fail, and what to do when they do fail will save you time, money, and potentially a serious injury.
Your garage door. whether it's a standard two-car door on a classic California ranch home or a larger door on one of Rolling Hills' multi-car estates. is heavier than it looks. Most residential doors weigh between 130 and 400 pounds. Springs counterbalance that weight so your opener motor (which is only designed to move about 15,25 pounds of net load) isn't overworked on every cycle.
There are two spring systems you'll encounter:
- Torsion springs mount horizontally above the door opening and wind and unwind to lift and lower the door. These are the modern standard and are generally considered safer and more durable. - Extension springs run along the sides of the door tracks and stretch to create tension. These are less common on newer installations in Southern California.
Standard torsion springs are rated for a certain number of cycles. one cycle equals the door going up and coming back down. A standard spring is typically rated for around 10,000 cycles, while high-cycle springs can be rated for 25,000 or more. If you use your garage door four times a day, that standard spring could reach its limit in under seven years.
Here's something specific to living on the Palos Verdes Peninsula: the salt-laden marine air that makes Rolling Hills unique also accelerates wear on your springs. Garage door springs can rust when exposed to persistent coastal moisture, and rust doesn't just look bad. it degrades the steel coils themselves, making them brittle and prone to snapping before they've hit their rated cycle count.
Neighboring communities like Rancho Palos Verdes deal with the same issue. The combination of salt air, the temperature swings between Rolling Hills' notably hot late summers (pushing into the low 90s) and cooler winters adds thermal stress on top of corrosion. It's a combination that can shorten spring life considerably if the springs aren't properly maintained.
The fix is straightforward: lubricate your springs every few months with a lithium-based lubricant, and have a technician inspect them annually for early signs of wear. Check out our maintenance tips on the blog for the full seasonal care routine.
Don't wait for the loud bang. Watch for these warning signs:
- The door feels unusually heavy when lifted manually - The door opens only a few inches then stops, even with the opener running, The door hangs lower on one side than the other, You can see a visible gap in the spring coils when looking above the door opening, The opener sounds like it's straining or grinding on every use
If you spot a visible gap in your torsion spring, the spring has already broken. Stop using the door immediately. Continuing to operate the door with a broken spring puts extreme stress on the opener motor and cables. and can cause additional, more expensive damage.
If you're unsure what you're looking at, reach out to us and we can walk you through it or schedule a same-day inspection.
This is worth saying plainly: garage door spring replacement is one of the few home repairs where a DIY attempt can cause serious injury or even death. Torsion springs are under immense tension. some under hundreds of foot-pounds of torque. If a spring releases unexpectedly during a replacement attempt, the result can be severe.
The tools required. winding bars, C-clamps, and proper wrenches. are specialized, and the technique for safely winding and unwinding torsion springs takes training to execute correctly. A misjudged winding can cause a spring to snap and launch with significant force. This is not a YouTube tutorial situation.
Beyond safety, getting the spring specification wrong matters. Since garage doors vary widely in weight and size, the replacement spring must be matched to your specific door. Installing an undersized spring causes the opener to overwork, shortening its life significantly. A professional will measure the door, calculate the correct wire gauge and spring length, and install to specification. then test the balance before leaving.
A qualified technician will:
1. Disconnect the opener and secure the door so it can't move unexpectedly 2. Safely release tension from the existing spring 3. Remove and measure the old spring to confirm the correct replacement spec 4. Install the new spring and wind it to the proper tension 5. Perform a balance test. the door should stay in place at about waist height when lifted manually and released 6. Check the cables, rollers, and hardware for any wear that should be addressed at the same time
If your door has two springs (common on heavier two-car doors), replacing both at the same time is strongly recommended. The second spring has the same cycle count as the one that broke and is statistically likely to fail within months. Doing both at once saves a second service call. You can learn more about what our service appointments include on our services page.
For most residential doors, spring replacement runs between $150 and $350 depending on spring type and whether both springs need replacing. High-cycle spring upgrades cost more upfront but can more than double the lifespan of the component. a worthwhile investment on a door that gets heavy daily use. Labor is typically included in those estimates.
If a technician quotes a full spring system conversion (from extension to torsion), that's a more involved job and will run higher. but it's often worth it for the improved safety and longevity torsion systems provide.
Garage Door Rolling Hills handles spring replacements throughout the Rolling Hills and Palos Verdes area. Our service areas page lists the communities we cover if you want to confirm we serve your neighborhood.
Q: Can I still use my garage door if the spring is broken? A: No. Operating a door with a broken spring puts the full weight of the door on the opener motor, which it isn't designed to handle. This can burn out the motor and damage the cables. More importantly, a door operating without proper spring tension is unpredictable and can drop suddenly, creating a serious safety hazard.
Q: How do I know if I have one spring or two? A: Look above your garage door opening. If you see a single long spring centered on the torsion bar, you have a one-spring system. Two shorter springs on the same bar indicates a two-spring system, which is common on heavier or wider doors. If only one spring has broken and the other is still intact, you may not immediately notice. look carefully for a gap in the coils on one side.
Q: How long should a new garage door spring last? A: Standard springs are typically rated for around 10,000 cycles. At four uses per day, that's roughly six to seven years. High-cycle springs rated for 25,000 cycles or more can last considerably longer. In Rolling Hills' coastal environment, proper lubrication every few months will help you get the most out of whatever spring is installed.