Why Garage Door Springs Snap in Londonderry Winters: And What to Do About It
2026-03-11 7 min read
Every winter in Londonderry, the same scenario plays out for homeowners across town: you climb into your car on a bitter January morning, hit the opener button, and nothing happens. or worse, you hear a sharp, cannon-like bang from the ceiling of your garage. That sound is almost always a garage door spring letting go. It's one of the most common service calls we see from Londonderry to Derry and throughout southern New Hampshire, and it's no coincidence that it happens almost exclusively in the coldest months of the year.
Why Cold Weather and Springs Don't Mix
Garage door springs are made of high-strength steel, and steel has a well-documented vulnerability to cold. When temperatures drop. and here in Londonderry, we regularly see lows dipping into the teens and single digits from December through February. the metal in your springs contracts and tightens. This means there is even more tension in the spring before the garage door is even operated. When the door is opened under those conditions, the spring is being asked to perform at maximum load at the exact moment the metal has the least amount of flexibility.
That combination is what causes the notorious sudden snap. Cold temperatures don't directly cause spring failure. but they accelerate the breakdown of a spring that's already been weakened by years of daily cycling.
The Freeze-Thaw Cycle Makes It Worse
Londonderry's winters aren't uniformly frigid. We get the classic New England pattern: a cold snap drops temperatures to 10°F overnight, then a mild stretch pushes the afternoon up into the 40s, only for the cold to return the next night. That repeated contraction and expansion. night after night for months. is cumulative stress on the metal. Think of it like bending a paperclip back and forth: each bend creates microscopic cracks until the metal eventually gives out entirely. By the time February rolls around, your springs have already endured dozens of those cycles since November.
This is also why so many spring failures happen not in December, but in late January and February. after months of accumulated fatigue have finally pushed the spring past its limit.
Warning Signs You Shouldn't Ignore
Springs rarely fail without giving some indication that trouble is coming. Learn to recognize these signals:
- The door feels unusually heavy. If you disconnect your opener and try to lift the door manually, it should feel relatively light and balanced. A heavy door almost always means a spring is losing tension. - Slow or jerky movement. A door that hesitates, lurches, or stops partway through its travel is telling you the springs are struggling. - Squeaking, popping, or creaking sounds. These sounds during operation point to metal stress and coils under strain. - A visible gap in the spring. Look at the torsion spring mounted horizontally above your door. If you see a gap in the coil. even a small one. the spring has already partially failed. - The door closes faster than normal. A door that drops quickly on its own can mean the spring has lost tension and is no longer providing the counterbalance it should.
If you notice any of these, it's worth having someone take a look before you end up with a door that won't open at all. Check out our repair cost breakdown to understand what a proactive spring replacement typically costs versus an emergency call. the difference is significant.
What You Can Do Right Now
There are a few maintenance steps homeowners can safely handle on their own that reduce the risk of winter spring failure:
Lubricate the springs in the fall. Apply a thin coat of a lithium-based or silicone spray lubricant to the spring coils. Standard lubricants can thicken and turn sluggish in cold temperatures, increasing friction and forcing the springs to work harder. Do this before the first hard freeze, not after.
Check the door balance. Pull the emergency release cord with the door closed, then manually lift the door to about waist height and let go. If it stays in place, the springs are reasonably balanced. If it falls or shoots up, the balance is off and a technician should look at it.
Know your spring's age. Most standard torsion springs are rated for approximately 10,000 open-and-close cycles. If you use your garage door twice a day, that's roughly 7,10 years of lifespan. If you bought a home in one of Londonderry's established neighborhoods. particularly in areas built during the 1970s through 1990s. and you don't know when the springs were last replaced, there's a good chance they're approaching the end of their life.
Don't Attempt Spring Replacement Yourself
This point deserves plain language: garage door spring replacement is not a DIY project. Springs store an enormous amount of tension. enough to cause serious injury or property damage if they release unexpectedly. Broken springs can snap violently, and an improperly installed replacement may fail prematurely or damage other components of the door system. This is strictly a job for a trained technician with the right tools.
If your door suddenly feels too heavy to lift or refuses to open, stop using it immediately. Continuing to force it can damage your opener motor and create additional safety hazards. Contact us to schedule a service call. we serve Londonderry, Manchester, Nashua, and the surrounding area.
For more on keeping your garage door weather-ready year-round, our guide on preparing your garage door for storm season covers everything from hardware checks to weatherstripping before severe weather hits.
Frequently Asked Questions
How do I know if my garage door spring is broken versus just off-balance?
A broken spring often produces a loud bang at the moment of failure and will leave a visible gap in the coil. An off-balance door tends to move unevenly or strain the opener over time. Either way, both issues require professional adjustment. attempting to force a door with a broken spring can cause further damage or injury.
How long does it take to replace a garage door spring in Londonderry?
Most professional torsion spring replacements take 1,2 hours for a trained technician. It's generally recommended to replace both springs at the same time, even if only one has broken, since they share the same wear history and the second is likely to fail soon after.
Can I still use my garage door with a broken spring?
No. Operating a garage door with a broken spring puts severe strain on the opener motor and creates a real safety risk. The door can drop suddenly or the opener can burn out entirely. Disconnect the opener and leave the door in place until a technician can assess and repair it.