2026-08-17 7 min read
If you've ever looked up at your garage door and wondered what keeps the whole thing from crashing down, you're looking at springs. Most Wolfeboro homeowners don't know whether they have torsion or extension springs, and honestly, that confusion costs them money. Here's the straight answer: torsion springs sit above the door and twist to lift it, while extension springs run along the sides and stretch to do the same job. Knowing which type you have isn't just trivia. It affects repair costs, replacement timing, and whether a DIY fix is even remotely safe.
Torsion springs are mounted horizontally on a metal shaft above your garage door opening. When you hit the opener button, the spring twists (torsion) and stores energy. That stored energy unwinds to help lift the 300 to 400 pound door with minimal effort from your opener motor.
Think of it like winding up a toy. The tighter you wind, the more energy it releases. Torsion springs do the same thing, except they're wound under extreme tension. One broken torsion spring can leave you stuck. Two springs (common in heavier doors) mean losing half your lifting power if one fails.
These springs typically last 7 to 9 years with normal use. They're more durable than extension springs because they're better protected from dust and moisture. The trade-off? Torsion spring replacement costs more because it requires specialized tools and expertise. If you've ever seen a snapped garage door spring, it was likely a torsion spring that let go suddenly.
Extension springs run horizontally on each side of your door, above the upper tracks. When the door opens, these springs stretch like a rubber band. When it closes, they contract and help ease the door down smoothly.
Extension springs are cheaper to replace than torsion springs, but they wear out faster. Expect 5 to 7 years of life from a quality set. They're also more exposed to humidity and temperature swings (common in New England winters), which accelerates rust and metal fatigue. In Laconia and surrounding areas, seasonal temperature changes can be especially tough on extension springs.
Many older Wolfeboro homes have extension spring systems. They're simpler and less expensive to install originally. But if one snaps, the other side still holds tension, creating an imbalanced lift. That puts strain on your opener motor and can damage the door itself over time.
**Need garage door springs in Wolfeboro today?** Call (978) 341-3396. We cover same-day service and emergency replacements across the area.
A squeaking or creaking garage door usually means springs need lubrication. But loud bangs, a door that opens slowly, or a door that won't open at all points to a snapped spring. If one spring fails, don't wait for the other to follow. They wear at roughly the same rate, so replacement soon makes sense.
Extension springs also have a safety cable running through them. If a spring snaps, that cable catches it so the spring doesn't whip across your garage (which can cause serious injury). Always check that cable is in place. If it's loose or missing, call a pro immediately.
You can learn more about emergency situations in our detailed guide on snapped garage door springs in Wolfeboro and why same-day repair matters.
If your door currently has extension springs, you can replace them with the same type. But many homeowners upgrade to torsion when it's time. Torsion springs are quieter, last longer, and provide smoother operation. The upfront cost is higher, but the longevity often justifies it.
Before deciding, get a professional estimate. Spring choice depends on your door's weight, your opener's capacity, and your budget. Our team at Wolfeboro Garage Doors can assess your current system and walk you through options. Visit our full spring repair and replacement services page to learn what we offer.
Spring failure isn't something to ignore or tackle yourself. The tension inside these springs is deadly if released improperly. One wrong move and you could suffer a serious injury. DIY spring replacement sends more than a few people to the emergency room each year.
Spring replacement cost depends on the type, quantity, and whether you need additional repairs. An extension spring might run $150 to $300 per pair (plus labor). Torsion springs typically cost $200 to $400 each, plus installation. Our pricing guide breaks down what actually drives garage door repair costs in Wolfeboro, so you know exactly what to expect.
Call us or schedule a free quote online to get a same-day estimate. We'll inspect both your springs and your opener to make sure everything else is in good shape while we're there.
Spring problems don't fix themselves. The longer you wait, the harder your opener works and the more damage spreads to other parts. A $250 spring replacement today beats a $1,200 opener replacement in three months.
If you suspect your springs are failing, don't guess. Reach out to us at (978) 341-3396 or book a service appointment here. We'll diagnose the problem, explain your options, and get your door working safely again.
Q: How do I know if my spring is torsion or extension? A: Look above your door. Torsion springs sit horizontally on a shaft centered above the opening. Extension springs run along the sides of the door, above each upper track. Torsion is in the middle; extension is on the edges.
Q: Can I replace one spring if only one snaps? A: Technically yes, but it's not recommended. Both springs wear at the same rate, so the other will fail soon. Replace both at once to avoid a second breakdown and imbalanced lifting.
Q: How much does spring replacement cost near me? A: Extension springs run $150 to $300 per pair plus labor. Torsion springs cost $200 to $400 each plus installation. Labor varies based on door type and any additional repairs needed.
Q: How long do garage door springs last? A: Torsion springs last 7 to 9 years. Extension springs typically last 5 to 7 years. Lifespan depends on usage, maintenance, and climate conditions in your area.
Q: Is it safe to open my garage door if a spring is broken? A: Do not open a garage door with a broken spring. The opener will strain excessively, and the door may fall unexpectedly. Call a professional immediately for safe, proper repair.