Garage Door Spring Replacement: What Andover Homeowners Need to Know Before It Breaks
2026-03-19 6 min read
There's a specific sound that Andover homeowners learn to dread. a loud bang from the garage that nobody saw coming. It's usually a torsion spring letting go. One moment your door is working fine; the next, it won't budge, your car is trapped inside, and you're calling around at 7 a.m. looking for help.
Spring failure is the single most common reason for a garage door that simply won't open. And while it's not always avoidable, it is usually predictable. The warning signs show up weeks or months before a full break. if you know what to look for.
How Garage Door Springs Actually Work
Torsion springs. the tightly wound coils mounted horizontally above your garage door opening. do the heavy lifting. A standard residential garage door weighs anywhere from 150 to 300 pounds, and the springs counterbalance that weight so the opener motor only has to manage a fraction of the load. When the springs fail, the opener is left trying to lift the full weight of the door on its own, which it's not designed to do.
Most residential torsion springs are rated for roughly 10,000 cycles. One cycle equals one full open and one full close. A household that uses the garage door four times a day will hit that number in about seven years. Homes in Andover and surrounding towns like New London and Wilmot where garages double as workshops. a common setup on the larger lots here. often see even heavier usage, which shortens that timeline.
Signs Your Springs Are Failing
Watching for these warning signs means you can schedule a planned replacement instead of an emergency one:
The Door Feels Heavy or Hard to Lift Manually
Disconnect your opener by pulling the red emergency release cord, then try lifting the door by hand to waist height. It should feel light. maybe 10 to 15 pounds of resistance at most. If the door feels like dead weight, or if it slowly drifts back down instead of staying in place, the springs have lost tension and aren't doing their job. This is one of the clearest early indicators.
Uneven Movement or Tilting
If your door appears lopsided when opening or closing. one side rising faster than the other. that typically means one spring has failed while the other is still partially functional. Uneven movement puts stress on the cables, rollers, and tracks, meaning one failed spring can quickly become a more expensive repair if left alone. Check our FAQ page for more on how to do a basic visual inspection.
Visible Rust, Gaps, or Stretched Coils
Rust is a serious red flag. In Central New Hampshire, where garages aren't always heated and humidity swings between the wet summers and freeze-thaw winters, springs are exposed to enough moisture to corrode over time. A rusty spring is a brittle spring. more likely to snap suddenly. Also look for:
- Gaps in the coils. on a torsion spring, a visible gap of two inches or more means it has already broken - Stretched or elongated coils. a sign the spring has lost its tension and can no longer support the door's weight properly - Discoloration or flaking. early-stage corrosion that will worsen without attention
If you spot any of these during a visual check, don't wait. A failing spring is not the same as a failed spring, and getting ahead of it avoids the emergency scenario entirely.
The Opener Sounds Like It's Straining
If your opener has started making more noise than usual. grinding, humming, or stopping mid-lift. it may not be an opener problem at all. When springs weaken, the motor compensates by working harder. Continued strain will eventually burn out the motor or strip its gears, turning a spring replacement into a spring-plus-opener replacement. If you're unsure which component type is right for a replacement opener, our post on opener types covers the options clearly.
A Loud Bang You Heard from Inside the House
If you already heard that gunshot-like sound, the spring has broken. Don't use the door. Don't try to force it with the opener. A 200-pound door with no counterbalance can drop suddenly, and attempting to operate the system in that state can damage cables, drums, and the opener motor simultaneously. Contact Garage Door Andover for same-day service. a broken spring is always a priority repair.
How Long Do Springs Last in Central New Hampshire?
Most torsion springs last between 7 and 10 years under average use. But several factors specific to this area can shorten that:
- Temperature cycling. the dramatic swings between our cold winters (single digits in January) and warm summers (upper 70s in July) stress metal components repeatedly over time - Humidity from nearby water. properties near Highland Lake, Bradley Lake, or the Blackwater River see more moisture in the air year-round, accelerating corrosion - High daily usage. homes where the garage door is also a workshop entrance or where multiple drivers use the same door can burn through 10,000 cycles much faster than the seven-year average
If your home was built in the 1990s or early 2000s and the springs have never been replaced, they're almost certainly due. That's true whether you're in the village district off Main Street or out on one of Andover's long country roads.
Should You Replace Both Springs at Once?
Yes. and this is one of the most practical pieces of advice any technician will give you. If one spring breaks, the other is the same age, has the same number of cycles on it, and will likely fail within months. Replacing both at the same time costs less than two separate service calls and leaves you with a balanced, matched system.
Spring replacement is not a DIY job. The springs are under extreme tension, and handling them without the right winding bars and technique can cause serious injury. Always use a licensed technician. Browse our services page to see what a full spring replacement and tune-up involves.
Frequently Asked Questions
Q: How much does it cost to replace garage door springs in Andover? A: Costs vary by spring type and door size, but extension springs typically run less than torsion springs. The price also covers labor and, ideally, a full system inspection. Replacing both springs at once is always more cost-effective than doing them separately.
Q: Can I still use my garage door with a broken spring? A: You should not. Operating the door with a broken spring puts the full weight of the door on the opener motor, which it isn't built to handle. It can also cause the door to drop unexpectedly, which is a serious safety risk.
Q: How do I know if my springs need replacement versus just lubrication? A: Lubrication fixes squeaking and stiffness caused by dry metal contact. If your door feels heavy when lifted manually, moves unevenly, or has visible rust, gaps, or stretched coils, those are spring failure issues that lubrication won't fix. A quick visual inspection combined with the manual lift test will tell you a lot. but when in doubt, have a technician take a look.