2026-05-18 7 min read
Here's what most homeowners don't realize about garage door springs: not all springs are the same. Most Alton homes use either a torsion spring or an extension spring, and the type matters more than you'd think. The difference between them affects everything from safety to repair cost to how long the spring lasts. After 15 years on the job, I've seen too many DIY attempts go wrong because someone didn't know which type they had.
Torsion springs are the heavy lifters of the garage door world. They're mounted horizontally above your door opening and work by twisting (or torquing) to lift the door's weight. When you open the door, the spring winds up like a clock mechanism, storing energy. That stored energy is what actually counterbalances the door so the opener only has to work a little.
Most modern homes in Alton use torsion springs, especially anything built in the last 20 years. They're safer, more durable, and last longer than extension springs. A good torsion spring lasts 7 to 9 years under normal use, which is solid for this climate. The downside? Replacement costs more upfront because they're more complex to install and require precise balance.
Extension springs work completely differently. They're mounted on either side of the door, running along the horizontal tracks. Instead of twisting, they stretch and compress like a rubber band. When the door closes, the springs extend. When you open it, they compress and help lift the weight.
Older homes and budget installations sometimes use extension springs. They're cheaper to replace than torsion springs, but they wear out faster in our New England weather. They also come with safety cables running through them. That cable is there for a reason: if an extension spring snaps, that coil whips across your garage at high speed. Not something you want near a car or person.
Walk into your garage and look directly above the door opening. If you see a long metal rod running left to right with coils wrapped around the middle, that's a torsion spring. If you see springs running along the left and right tracks alongside the door panels, those are extension springs.
Not sure? Just look for the thick, wound coil above the opening. That's torsion. Simple as that.
**Need garage door springs in Alton today?** Call (978) 882-9452 for same-day service across the area.
A snapped spring means your door won't open or close properly, and the opener will struggle hard trying. Extension springs fail more often because they're under constant tension, even when the door is closed. Torsion springs fail too, but usually after longer service. When either one breaks, the repair cost depends on the type and your door's weight.
If you've got an extension spring that's failed, replacement might run $150 to $300 per spring. Torsion springs typically cost $200 to $400 because the installation is more technical. That's why knowing your spring type helps when you call for an estimate. We can give you accurate pricing once we know what we're dealing with.
Winter is especially rough on springs in Alton and the surrounding region. Cold temperatures make metal brittle, and the constant freeze-thaw cycle puts extra stress on the coils. If your springs are already seven or eight years old heading into next winter, consider getting them replaced before they fail. A preventive replacement beats an emergency call at midnight.
Check out our detailed guide on garage door springs cost, lifespan and replacement timing for more on when replacement makes sense financially.
Torsion and extension springs need slightly different care. Both benefit from regular lubrication, but extension springs also need you to check those safety cables for fraying. If a cable is worn, it won't stop the spring if it snaps. Read our bearing lubrication guide for specific products and techniques that work in our climate.
Never try to adjust or replace a garage door spring yourself. The tension is dangerous. A 400-pound door needs serious counterbalance, and that energy will injure you if something goes wrong. Let a professional handle it. When you need help, Garage Door Alton offers full spring repair and replacement services with same-day availability most days.
If your door opens slowly, closes too fast, or won't stay open on its own, a spring issue is usually the culprit. Don't ignore it. A worn spring puts stress on your opener and can damage other parts. Get an estimate before the spring fully fails. Schedule a free quote with us and describe what you're seeing, and we'll send someone out to diagnose it.
Spring problems don't fix themselves, and they get worse fast. A small repair today prevents a bigger bill tomorrow.
How long do garage door springs typically last? Torsion springs last 7 to 9 years with normal use. Extension springs often fail sooner, around 5 to 7 years. Lifespan depends on door weight, cycle frequency, and climate stress.
Can I replace just one spring if one snaps? For torsion springs, we replace both even if one snapped. They wear at the same rate, and replacing one leaves the other to fail soon after. Extension springs can sometimes be done individually, but we'll advise based on age and condition.
Why do springs fail more often in winter? Cold metal becomes brittle and loses flexibility. The freeze-thaw cycle in Alton winters creates micro-stress on the coils. Springs already near the end of their life often fail when temperatures drop.
What's the difference in safety between torsion and extension springs? Torsion springs are safer because the energy release is controlled. Extension springs can whip violently if they snap, which is why safety cables are critical. Never rely on an extension spring without checking the cable first.
How much does spring replacement cost in Alton? Extension spring replacement runs $150 to $300 per spring. Torsion springs cost $200 to $400 depending on door weight and installation complexity. Call (978) 882-9452 for a specific quote based on your setup.