2026-09-11 7 min read
Most homeowners don't think about their garage door until it stops working. By then, a snapped spring has already cost them hundreds of dollars and a day without vehicle access. The good news: understanding what causes spring failure helps you avoid that expense altogether.
Your garage door weighs 300 to 500 pounds. It doesn't lift itself. Two springs (usually torsion springs mounted above the door, or extension springs on the sides) counterbalance that weight and do nearly all the heavy lifting. Your opener just triggers them.
Springs last 7 to 9 years under normal use. That's roughly 10,000 to 15,000 open/close cycles. When one fails, the other bears double the load and usually fails within weeks. A single broken spring makes your door unsafe to operate and opener repairs ineffective.
Torsion springs sit horizontally above your door and twist to store and release energy. They're more durable, safer, and cost more upfront but last longer.
Extension springs run vertically along each side of the door and stretch under load. They're cheaper initially but wear faster and pose a safety hazard when they snap (the coils can fly across your garage at high speed).
If you're unsure which type you have, learn more about garage door safety in Mont Vernon to understand the risks and benefits of each system.
Springs fail for predictable reasons. Rust weakens the metal, especially in New England's humid climate and salt air near the coast. Lack of lubrication increases friction and metal fatigue. Overuse (opening your door 10+ times daily) shortens lifespan.
Age is inevitable. Springs are rated for a finite number of cycles. Once you hit that limit, failure is just a matter of time, not chance.
Poor maintenance accelerates everything. A quick annual inspection and light lubrication can add years to spring life. Skip it, and you're gambling.
**Need garage door springs in Mont Vernon today?** Call (978) 924-6118. we cover same-day service across the area.
A single torsion spring replacement typically runs $200 to $400, including labor. Extension springs cost $100 to $200 per spring. Both springs together, installed: $300 to $600.
Those prices assume you call a professional the day the spring breaks. Emergency or weekend service costs more. Waiting also risks damage to your opener (it works harder with a broken spring) and potential safety incidents.
A preventive spring inspection costs nothing and takes 10 minutes. Most spring failures happen without warning, so knowing your springs' age is your best defense.
Mont Vernon Garage Doors offers a free estimate before any work starts. No surprise bills. You'll know the exact cost upfront.
Lubricate your springs twice yearly with a lightweight garage door lubricant (not WD-40). This reduces friction and corrosion.
Keep your garage reasonably dry. Humidity rusts metal fast. A dehumidifier or simple ventilation helps.
Avoid slamming the door or forcing it open manually if the spring is damaged. Manual force stresses the remaining spring and opener.
Have your door inspected annually, especially if you live near the coast where salt air accelerates rust. Check our garage door maintenance guide for Mont Vernon homeowners for a full seasonal checklist.
Springs are under extreme tension. If you accidentally release that tension while replacing a spring, the coils can cause serious injury.
Springs also require precise installation. Incorrect tension or alignment will cause premature failure or uneven door movement. A misaligned door stresses your opener and shortens its life.
Professional installation ensures safety, correct tension, and warranty coverage on parts and labor. The small extra cost is worth the peace of mind.
If your door won't open or you hear a loud snap, you likely have a broken spring. Don't force the opener; it won't help and will cause additional damage.
Schedule a free quote with Mont Vernon Garage Doors and get same-day service in most cases. We'll diagnose the issue, explain your options, and give you a clear cost estimate before starting any work.
Call us at (978) 924-6118 if you need immediate help. We serve Mont Vernon and surrounding towns throughout southern New Hampshire.
Spring failure is frustrating but fixable. The real cost comes from ignoring the problem. Act fast, choose a trusted local professional, and you'll be back to normal by tomorrow.
How do I know if my garage door spring is broken? Your door won't open, or it opens only partway. You may hear a loud bang when it fails. The door feels heavier than usual. Never force a broken door; call a professional immediately.
Can I replace a garage door spring myself? Not safely. Springs are under 200+ pounds of tension. Incorrect release can cause serious injury. Professional installation is required for safety and warranty.
How long do garage door springs last? Torsion springs last 7 to 9 years (10,000 to 15,000 cycles). Extension springs wear faster, typically 5 to 7 years. Maintenance and climate affect lifespan significantly.
What's the difference between a torsion and extension spring? Torsion springs twist above the door and are safer, more durable, and cost more. Extension springs stretch on the sides, cost less, but fail faster and pose safety risks when they snap.
Why is my garage door spring repair so expensive? Springs are high-tension components requiring professional installation. Labor, safety equipment, and warranty coverage add to the cost. Preventive maintenance is far cheaper than emergency repairs.