Garage Door Spring Types in Stratham, NH: Torsion vs. Extension Explained

Name: Stratham Garage Doors
Address: 1 Breslin Farm Rd, Stratham, 03885, US
Telephone: 19785416990
Price range: $$

2026-09-27 5 min read

Here's what most homeowners don't realize about garage door springs: there are two completely different types, and they work in opposite ways. Your garage door almost certainly uses one or the other, but many people in Stratham have no idea which one they have until something breaks. Understanding the difference between torsion and extension springs helps you spot problems early, know what to expect during repair, and make smarter decisions about replacement.

How Torsion Springs Work

Torsion springs are mounted horizontally above your garage door opening, running along a steel shaft. When you open the door, the springs twist or rotate, storing energy that helps lift the heavy door panel. Think of them like a wound-up clock spring that slowly unwinds. As the door rises, the springs release tension, making the lift easier on your opener motor.

These springs are the most common type in modern residential garages across Stratham and surrounding areas. They're durable, efficient, and typically last 7 to 9 years with normal use. One torsion spring can support the entire weight of your door, which is why a snapped spring makes the door feel impossibly heavy.

How Extension Springs Work

Extension springs run vertically along both sides of your garage door opening, above the upper track. Instead of twisting, they stretch and contract like a rubber band. As the door goes up, the springs extend and pull upward. As it closes, they contract and help slow the descent.

Most homes built before the 1980s use extension springs. They're less common now but still found in some older Stratham properties. Because there are usually two of them (one on each side), if one snaps, the other might still carry some weight, though your door will operate unevenly and dangerously.

Key Differences at a Glance

Torsion springs twist and store energy through rotation. Extension springs stretch and store energy through tension. Torsion springs wear more evenly and last longer. Extension springs require safety cables to prevent injury if they snap. Torsion springs cost slightly more to replace but offer better performance and safety margins.

If you're unsure which type you have, look above your door. Horizontal shaft with coiled springs? That's torsion. Springs running vertically along the tracks? Extension springs.

**Need garage door springs in Stratham today?** Call 19785416990. we cover same-day service across the area.

When Springs Fail

Both types eventually fail. Torsion springs typically snap with a loud bang and immediately make your door inoperable. You'll hear a crack or pop, and suddenly the door won't open or feels completely stuck when you try.

Extension springs often fail more quietly. You might notice the door moving slower, sitting unevenly, or feeling jerky. Sometimes one spring breaks while the other holds, creating an unbalanced, dangerous situation. We've seen homeowners in Stratham try to open doors with broken springs, and it puts enormous strain on the opener and creates a safety hazard.

Don't attempt to replace springs yourself. These components are under extreme tension. A snapped spring can cause serious injury. Our team handles spring replacement safely, and we can often provide a same-day estimate and repair.

Repair vs. Replace

Once a spring breaks, it cannot be repaired. The entire spring must be replaced. Many homeowners ask if they can replace just the broken one, but best practice is to replace both springs at the same time, even if only one failed. Springs wear together, and replacing both ensures balanced, safe operation.

For details on choosing between repair and replacement in other scenarios, check out our guide on when to repair versus replace garage door springs.

Cost and Timeline

Spring replacement cost varies based on spring type, door weight, and local rates. Torsion springs typically cost more than extension springs, but the difference is modest. A professional can explain what drives garage door pricing in detail.

Most replacements take 1 to 2 hours. We offer same-day service for spring emergencies, and our team can usually schedule repairs within hours of your call.

Our Spring Service

Stratham Garage Doors handles both torsion and extension spring replacement, repair, and maintenance. We inspect springs during regular tune-ups to catch wear before a snap occurs. If your spring is already broken, we provide a free estimate and handle the job safely and quickly.

If your garage door spring is broken, damaged, or you want to learn more about our spring services and options, contact us today. Call 19785416990 or schedule a free quote online to arrange a same-day visit.

Spring problems don't fix themselves, and waiting only increases the risk of damage to other parts. Let our team get your door working safely again.

Frequently Asked Questions

How long do garage door springs last? Torsion springs typically last 7 to 9 years, while extension springs often reach 5 to 7 years. Lifespan depends on usage frequency, climate, and maintenance. Regular lubrication and inspection can extend life slightly.

Can I replace just one broken spring? Technically yes, but both springs should be replaced together. Springs wear as a pair, and replacing only one creates imbalance, uneven wear on the remaining spring, and safety risks during operation.

How much does spring replacement cost? Cost ranges based on spring type and door weight. Torsion springs cost more than extension springs. A professional estimate is the best way to understand pricing for your specific door and situation.

What happens if a spring breaks? A snapped torsion spring typically makes the door inoperable immediately. Extension springs may fail more gradually, but either way, the door becomes unsafe to operate and requires professional replacement before use.

Is it safe to use my garage door with a broken spring? No. A broken spring removes critical support, forcing the opener motor to work extremely hard and risking damage to the door, tracks, and opener. Safety sensors may also fail to function properly.

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