2026-08-21 7 min read
Here's what most homeowners don't realize about garage door springs: not all springs are created equal. Your garage door likely uses either a torsion spring or extension springs, and mixing them up can cost you hundreds in unnecessary repairs. Understanding which type you have saves money, prevents damage, and helps you avoid overpaying when something breaks.
Torsion springs sit horizontally above your garage door opening, wound tightly like a clock spring. When your door opens, they unwind and release stored energy. When it closes, they wind back up. This design concentrates all the lifting power into one or two springs, which is why they're incredibly efficient.
Most modern garage doors in Deerfield and across New Hampshire rely on torsion springs. They typically last 7 to 9 years with normal use, handling roughly 10,000 to 15,000 open-close cycles before wearing out. The big advantage: one snapped spring usually means one replacement (though some doors use two).
The downside? Torsion springs cost more upfront and require professional installation due to the extreme tension involved.
Extension springs run vertically along both sides of your door frame. They stretch and contract as your door moves, working like traditional coil springs. Older homes and budget-friendly doors often use this style.
Extension springs are cheaper to replace and can be safer for DIY-minded homeowners, since the tension is lower. However, they require more components (pulleys, cables, safety cables) to function properly. If one snaps, you're often replacing both as a pair to keep your door balanced.
Replacing a snapped torsion spring costs more than an extension spring replacement, typically running $200 to $400 for parts and labor in Deerfield. But torsion springs last longer and require fewer supporting components, so you spend less money over time. Extension springs are cheaper upfront, but you'll replace them more frequently.
If your door uses extension springs and one fails, replacing both is mandatory for safety and balance. That added cost often erases any initial savings.
**Need garage door springs in Deerfield today?** Call (978) 915-3574. we cover same-day service across the area.
Look at your garage door from inside the garage with the door closed. Torsion springs sit above the door opening, running perpendicular to the wall. They're visible in the center or slightly off to one side. Extension springs run along both sides of the door frame, parallel to the ground.
Unsure? Check your paperwork from installation, or snap a photo and call Garage Door Deerfield for a quick identification. Many homeowners discover the wrong type when they get a repair estimate and realize they've been quoted for the wrong part.
A snapped spring is the most common failure. You'll hear a loud bang, and your door either won't open or feels dangerously heavy. Never try to force it open. For guidance on what happens next, see our detailed guide on what to do when one snaps.
Rust and corrosion accelerate spring failure, especially in New England winters. Annual maintenance catching early rust means you replace springs before catastrophic failure, not after your door traps your car inside.
Spring tension imbalance also sneaks up on homeowners. If your door opens slowly on one side or feels uneven, that's a tension issue. An out-of-balance door puts extra stress on your opener and remaining springs, cascading into bigger repairs.
For the full breakdown of repair versus replacement costs specific to your situation, review our repair versus replace cost guide.
If both springs are original and past 8 years old, replacing them together makes sense financially. A single spring failure on a 10-year-old door often signals the second is close behind.
If one spring snapped on a newer door (under 5 years), replacing just that one is reasonable. But inspect the other spring for signs of rust or wear.
Professional inspection always beats guessing. Many people spend $300 fixing one spring, only to have the other fail six months later. A $150 estimate visit prevents that waste.
Visit our full garage door repair cost breakdown for regional pricing and what's typical in Deerfield.
Don't call around asking "how much for a spring?" without letting a technician see your door first. Spring costs vary by type, tensile strength, door weight, and local labor rates. A proper estimate requires an in-person visit.
Garage Door Deerfield provides same-day estimates and can often repair the same day if parts are in stock. Call (978) 915-3574 or schedule a free quote online to stop guessing and start saving.
The longer you wait after a spring fails, the higher the risk of secondary damage to your opener, cables, and door panels. Acting fast protects your wallet.
How much does a torsion spring replacement cost in Deerfield? Torsion spring replacement typically costs $200 to $400 installed, depending on spring size and door weight. Heavy doors or specialty springs run higher. Labor makes up about half the cost.
Can I replace a garage door spring myself? Not recommended. Spring tension can exceed 500 pounds of force. A slipped wrench or miscalculation causes serious injury or death. Professional installation is the only safe choice for torsion springs.
How long do garage door springs last? Torsion springs last 7 to 9 years. Extension springs often fail sooner, around 5 to 7 years. Frequency of use and maintenance affect actual lifespan significantly.
What happens if I ignore a snapped spring? Your door becomes extremely heavy and difficult to open manually. Operating an opener with a broken spring damages the opener motor, gears, and cables, turning a $300 spring replacement into a $600+ opener replacement.
Should I replace both springs even if only one broke? If both springs are original and over 8 years old, yes. If one is newer, replacing both is optional but recommended for long-term balance and safety.