2026-08-14 7 min read A2Z Garage Doors
Most homeowners never think about their garage door springs until one snaps. Then suddenly you're stuck with a door that won't budge, and you're scrambling to figure out what went wrong. The truth is, knowing the difference between torsion and extension springs can save you money, frustration, and a potential safety hazard down the road.
Your garage door weighs between 300 and 500 pounds. Those springs aren't decorative. They're engineered to lift all that weight smoothly every single time you press the button. Without them functioning properly, your door either won't open, won't close safely, or both.
There are two main types: torsion springs and extension springs. Most modern homes in San Diego use torsion springs because they're more reliable and safer. But plenty of older garages still have extension systems. Understanding which one you have is your first step toward making smart repair decisions.
Torsion springs sit horizontally above your garage door opening. They work by twisting or torquing, storing energy as they wind up when your door closes. When you open the door, that stored energy releases and helps lift the weight.
These springs last 7 to 9 years with average use, maybe longer if you're light on garage door cycles. A typical San Diego household opens and closes their door 3 to 5 times daily, so you're looking at a solid decade if you're lucky. When a torsion spring snaps, the door drops hard and fast. That's dangerous. You need professional help immediately, not a DIY fix.
The cost to replace torsion springs typically runs higher than extension springs, but they're worth it for safety and longevity. If you're curious about what to budget, our guide on garage door springs in San Diego covers when to replace and what it costs.
Extension springs run along both sides of your door opening, stretching and contracting as the door moves. They use pulley systems and cables to do the heavy lifting. Older garages, particularly in neighborhoods around Ocean Beach and inland suburbs, still rely on these.
Extension springs wear out faster than torsion springs, usually lasting 5 to 7 years. They're also less stable under load, which means your door might shake or bind during operation. Plus, if one snaps, the other side can't hold the weight alone, and your door crashes down. Safety cables exist to prevent serious injury, but a broken extension spring system is still an emergency.
**Need garage door springs in San Diego today?** Call 562-573-1653. We cover same-day service across the area.
Walk into your garage and look directly above the door opening. Do you see a tightly wound metal shaft running horizontally across the top? That's torsion. Do you see springs mounted vertically on each side above the tracks, with pulleys and cables? Those are extension springs.
If you can't tell or you're not comfortable looking, don't guess. A misdiagnosis wastes time and money. Our team at Garage Door San Diego can identify your system and recommend the right solution within minutes. Schedule a free quote to get a same-day estimate.
Never attempt to replace only one spring if you have two. Both springs wear out at nearly the same rate. Replacing just one leaves the other under extra stress, and you'll be calling for emergency service in weeks. Always replace springs in pairs, whether you have torsion or extension systems.
This principle applies regardless of which type you have. It's one of those rules learned the hard way after 15 years on service trucks. Homeowners try to save $200 on one spring and end up spending $500 on an emergency call.
Damaged springs don't get repaired. They get replaced. Attempting to weld or patch a snapped spring is dangerous and illegal in many jurisdictions. If a spring has snapped, is visibly bent, or making noise, replacement is your only option. Read more about what to do when your garage door spring snaps in San Diego for step-by-step emergency guidance.
Regular maintenance can extend spring life slightly, but eventually wear wins. Lubricate your springs annually, keep the door balanced, and avoid overloading the system with excessive cycling.
Torsion and extension springs come in different gauges, diameters, and wind ratings. A spring rated for 10,000 cycles won't last as long as one rated for 15,000 cycles under the same conditions. Your garage door configuration, local climate in San Diego, and usage patterns all matter.
Guessing on spring specifications can lead to premature failure or inadequate support. Browse our spring services and specifications to see what your door needs, or call us for a detailed assessment.
Torsion springs are the modern standard, safer, and more reliable than extension springs. They cost more upfront but last longer and perform better. If you have extension springs and they're failing, upgrading to torsion is worth the investment.
Don't wait for a spring to snap. Plan ahead by understanding what you have and when replacement is due. Call 562-573-1653 today to discuss your spring system and get peace of mind.
How much does a garage door spring replacement cost in San Diego? Torsion spring replacement typically costs $250 to $400 per spring. Extension springs run $150 to $250. Pricing depends on spring rating, door weight, and labor. Get a free estimate by calling 562-573-1653.
Can I replace a garage door spring myself? No. Spring systems store enormous tension and can cause serious injury or death if released improperly. This is a professional-only job in California. Always hire a licensed technician.
How long do garage door springs last? Torsion springs last 7 to 9 years. Extension springs last 5 to 7 years. Cycle count and maintenance affect actual lifespan. Most homeowners see replacement needed around year 8.
What happens if a garage door spring breaks? Your door becomes extremely heavy and won't operate. It may drop suddenly, causing injury or property damage. Stop using the door immediately and call for emergency service.
Do I need to replace both springs at once? Yes. Both springs wear at the same rate. Replacing one leaves the other under stress, and you'll need another replacement within weeks. Always do both together.