2026-08-03 7 min read
Your garage door relies on one of two spring types to lift and lower smoothly: torsion or extension springs. The type you have determines repair cost, replacement timeline, and safety risk. Understanding which system you own prevents overpaying for the wrong part and helps you catch problems before a snapped spring leaves you stranded.
Torsion springs wind around a metal rod above your garage door opening. They twist and untwist to counterbalance the door's weight as it moves. Most modern homes in Cary use torsion springs because they're safer, last longer (7 to 9 years on average), and distribute stress more evenly across the system.
A single torsion spring can weigh 30 to 50 pounds and store enormous tension. This is why a snapped spring demands immediate professional attention. The spring doesn't just fail quietly; it can whip violently and cause serious injury or property damage. You'll know one has failed when your door won't open or feels heavy to lift manually.
Torsion springs cost more upfront (typically $150 to $300 per spring) but require fewer replacements over a door's lifetime. They also reduce wear on your garage door opener, which saves money later.
Extension springs hang on either side of your door, above the horizontal tracks. They stretch and contract to assist the door's movement. Older homes and budget installations often use these because the initial cost is lower.
The trade off: extension springs fail more frequently and less predictably. They typically last 5 to 7 years and cost $100 to $200 per spring to replace. When one snaps, the other side bears all the weight, causing rapid failure and potential safety hazards.
Extension springs also require safety cables threaded through them. If a spring breaks, the cable catches the spring and prevents it from whipping across your garage. Without the cable, a snapped extension spring becomes a dangerous projectile.
**Need garage door springs in Cary today?** Call (984) 283-5255. We cover same-day service across the area and provide honest estimates upfront.
Look above your garage door from inside the garage. Torsion springs run horizontally across the top center, above the door opening. Extension springs run vertically along the sides, near the top corners.
Still unsure? Take a photo and text it to Cary Garage Doors. We'll identify your system and explain what replacement or repair will cost, no guesswork involved.
Price depends on spring type, door weight, and whether you need one or both springs replaced. A single torsion spring replacement runs $200 to $400 installed. Both springs together cost $350 to $600. Extension springs are slightly cheaper: $150 to $300 per spring, or $250 to $400 for a pair.
Emergency or same-day service may add $75 to $150 to your bill. If you've been living with a broken spring or suspect one is failing, don't wait. A failed spring puts stress on your opener and tracks, driving up repair costs exponentially. We offer free estimates to help you budget before any work begins.
For a detailed breakdown of spring costs versus other garage door repairs, review our guide on why garage door springs fail and what replacement really costs.
Spring life doesn't end dramatically for everyone. Listen for warning signs: grinding noises, jerky door movement, or difficulty opening the door manually. These suggest a spring is weakening and near failure.
If your door is 8 years old and uses extension springs, replacement is overdue. Torsion springs typically last longer, but inspect them annually as part of basic garage door maintenance in Cary. A small tune-up now prevents emergency calls and expensive opener damage later.
Many homeowners ask whether they can replace springs themselves. Don't. The tension stored in these springs is equivalent to several hundred pounds of force. Even small mistakes cause serious injury. Professional technicians have the tools and experience to replace springs safely.
Whether you hear a snap or simply want peace of mind, schedule a free quote with us. We'll inspect both springs, explain what you have, and give you honest pricing without upsells.
If your door is already broken, same-day service is available. Call (984) 283-5255 right now to book an appointment or ask questions about your specific situation.
How long do garage door springs last? Torsion springs typically last 7 to 9 years with average use. Extension springs last 5 to 7 years. Lifespan varies based on how often you use your door, climate conditions, and maintenance history.
Can I replace just one spring? For extension springs, yes, though replacing both is safer and cheaper long-term. For torsion springs, replacing both together ensures balanced weight distribution and prevents premature failure of the second spring.
Why is spring replacement so expensive? Springs store massive tension and require specialized tools and expertise to install safely. Labor costs reflect the danger and precision required. Skipping professional service risks injury and vooids warranties.
What happens if a spring breaks while my door is open? Your door will stay in place. The immediate risk is low. However, closing it manually or using the opener stresses the remaining spring and opener. Call a professional before operating the door again.
Do I need both springs replaced at once? Not always, but it's often recommended. If one torsion spring fails, the second is usually near failure. Replacing both prevents a second breakdown weeks later and keeps costs predictable.