2026-04-05 6 min read
There's a particular sound that garage door technicians hear about constantly in early spring calls across Acworth and the surrounding towns of Keene, Newport, and Sunapee: a loud bang from the garage, sometimes described as a gunshot. Homeowners who experience it are usually startled, and when they go to investigate, they find the door won't open. or opens only a few inches and stops. Nine times out of ten, it's a broken torsion spring.
Spring failures spike in late winter and early spring in New Hampshire. and that's not a coincidence. After months of brutal cold cycling through freeze and thaw, the metal in your springs has been put through a punishing workout. Acworth's winters, where temperatures swing from lows of around 14°F in January to above-freezing days that melt the snowpack, are especially hard on torsion springs because the constant thermal contraction and expansion accelerates metal fatigue.
The good news is that most spring failures don't happen without some warning. Here's what to watch for.
Before you can spot a problem, it helps to understand what the springs are doing. Torsion springs. the horizontal coil mounted above the door opening. store mechanical energy as the door closes and release it to counterbalance the door's weight when you open it. Most standard residential torsion springs are rated for around 10,000 cycles, which at 3,4 uses per day translates to roughly 7,9 years of life.
That lifespan shrinks when you factor in temperature extremes, heavy doors, or deferred maintenance. For many older homes in Acworth. including the capes, colonials, and farmhouses common throughout Sullivan County. garage doors haven't been touched since they were installed, and springs that are well past their service life are quietly waiting to fail.
This is the easiest DIY test you can do. Disconnect your opener by pulling the emergency release cord, then try to lift the door manually to about waist height. A properly balanced door, with springs in good condition, should feel relatively light. you should be able to hold it at mid-level with one hand and it should stay roughly in place. If it drops immediately, feels like dead weight, or takes real effort to lift, your springs are no longer doing their job of counterbalancing the door.
Look up at the torsion spring above your garage door. The coils should be uniform with no separation between them. A broken spring shows a clear gap. often about two inches. where the metal has pulled apart. If you see this, stop using the door immediately. A door operating with a broken spring puts enormous strain on the opener motor and cables, and can cause secondary damage that significantly raises your repair bill.
A door that stutters, shakes, or tilts to one side as it opens is often dealing with uneven spring tension. This happens when one spring has failed or weakened significantly more than the other. The imbalance puts extra stress on the opener and can cause the door to derail from its tracks if left unaddressed.
In a climate like Acworth's. with high seasonal humidity, heavy snowfall, and road salt in the air. rust on garage door springs is genuinely common. Rust weakens the metal, accelerates wear, and increases the risk of sudden failure. If you see orange-brown corrosion building up on the spring coils, that's a sign the spring's structural integrity is compromised. A light coating of silicone or lithium-based lubricant applied every few months helps slow this process, but it won't reverse significant rust.
When springs weaken, the opener motor has to work harder to compensate. If your opener sounds labored, runs slowly, or seems to struggle on the way up. especially on cold mornings. that's often a spring issue, not an opener issue. Running a failing opener against worn springs repeatedly will eventually burn out the motor, turning a spring replacement into a much larger repair.
It's worth reviewing our notes on maintenance value and when to invest in repairs if you're trying to figure out whether to repair or replace components as they age out.
This comes up a lot, and the answer is straightforward: torsion springs are under extreme tension. enough to cause serious injury if a spring snaps or a winding bar slips during installation. This isn't a standard home repair project. Even experienced DIYers who are comfortable with most mechanical work should leave spring replacement to a professional with the right tools and training.
If your springs are showing any of the warning signs above, the right call is to stop using the door and schedule a service visit before the spring fails completely. A controlled replacement is always less expensive. and infinitely safer. than an emergency call after a spring snaps.
A professional spring replacement typically means inspecting the entire system. not just the spring. to identify any secondary damage. Both springs are usually replaced at the same time, even if only one has failed, because springs wear at similar rates and a door with one new and one old spring will be back to uneven tension within months. The whole job typically takes one to two hours for a trained technician.
While you're having the springs looked at, it's also a good time to ask about your door's overall condition. Acworth's climate means panels, weather seals, and hardware all take a beating. Our full services overview covers everything we inspect during a spring replacement visit.
In a region like western New Hampshire, plan for standard torsion springs to last 7,10 years with normal use. If your door is used frequently. multiple cars coming and going, a busy household. that lifespan moves toward the lower end. If the springs on your door have never been replaced and the door is more than a decade old, have them professionally inspected before the next winter season. At Garage Door Acworth, we'd rather catch a spring at 80% worn than get the emergency call when it finally lets go.
For a more complete picture of how your whole door system holds up over time, our homeowner feature checklist is a good reference for what to monitor and when.
Q: If one spring breaks, do I really need to replace both? A: Yes, and most professionals will strongly recommend it. Springs are installed as a matched pair and wear at roughly the same rate. If one has broken, the other is likely close behind. Replacing both at the same time saves you a second service call within months and ensures the door operates with balanced tension from the start.
Q: Is it safe to use my garage door if I suspect a spring is worn but hasn't broken yet? A: Use extreme caution. A door with significantly worn springs puts heavy strain on the opener motor and cables. If the door feels heavy, moves unevenly, or makes unusual noises, stop using the automatic opener and call a technician. The risk of further damage. or a sudden full failure. isn't worth the convenience.
Q: How can I make my garage door springs last longer in New Hampshire's climate? A: Apply a silicone-based or lithium-based lubricant to the spring coils every three to six months. This reduces friction, slows rust formation, and keeps the metal moving smoothly through temperature changes. Avoid WD-40 on the springs. it attracts dust and can cause buildup that actually increases wear over time.