2026-03-20 7 min read
If you've ever walked out on a frigid Dunstable morning, hit the button on your opener, and heard nothing but a loud bang followed by silence. you already know what a broken spring feels like. It's one of the most common calls we get every winter, and there's a very real scientific reason it happens here more than almost anywhere else in Massachusetts.
Dunstable sits right on the New Hampshire border in northern Middlesex County, and the winters here are no joke. Temperatures regularly drop from the teens overnight and can swing 20 or more degrees by afternoon. That constant contraction and expansion is exactly what wears down torsion springs faster than in milder climates.
Here's why: garage door springs are made of tightly wound steel, which naturally contracts when exposed to cold air. As the metal contracts, the spring becomes more brittle and less flexible. making it more susceptible to breaking under tension. If a spring is already mid-life and a polar blast rolls in off the NH border, that could be all it takes.
What makes Dunstable particularly tough on springs isn't just the cold peaks. it's the cycling. Each time the temperature swings, the metal expands and contracts slightly. By late winter, months of accumulated micro-damage reach a critical threshold. That's why so many spring failures happen in February and March, not in the dead of December.
Springs rarely fail without giving you a few hints first. Watch for these:
- The door feels heavier than usual on cold mornings. this means the springs are losing their ability to counterbalance the door's weight - Unusual popping, squeaking, or rattling during operation. sounds like these indicate metal stress - The door jerks or stops partway while opening - A visible gap in the spring coil above the door. this means it has already partially separated - The door closes faster than normal. a dangerous sign that one spring has lost tension
If you spot a gap in the coils or the door feels impossibly heavy, stop using it immediately. Operating a door with a broken spring forces the opener motor to take on the full weight of the door. which can destroy the motor and, in a worst case, cause the door to come down fast.
This is worth saying plainly: garage door spring replacement is not a DIY job. Springs store an enormous amount of energy under tension. When that energy releases unexpectedly, it can cause serious injury or property damage. The proper tools, training, and technique matter here. this is strictly a job for a certified technician. If you're ever unsure about what you're looking at, check our frequently asked questions for more on what's safe to handle yourself.
Beyond cold weather, a few other factors speed up spring wear in Dunstable homes:
Wrong spring rating for the door. Many of the Colonial Revivals, Cape Cods, and two-car attached garages common in Dunstable have heavier doors. especially older wood doors or newer insulated steel doors. If whoever installed the springs didn't properly account for the door's weight, the springs wear out faster.
Lack of lubrication. Standard lubricants can thicken and become less effective in cold weather, increasing friction and forcing springs to work harder. A light coat of garage door-specific lubricant applied each fall goes a long way.
Age. Most torsion springs are rated for about 10,000 cycles. roughly 7,10 years of daily use. If your springs are aging and you haven't had them inspected, this winter could be the one that finally does them in.
The best time to deal with springs is before they fail. Scheduling a professional inspection each fall. before the first hard freeze. lets a technician spot micro-fractures, check spring tension, lubricate moving parts, and flag anything that's close to the end of its life. Residents in Chelmsford and Westford face similar conditions, but because Dunstable sits closer to the NH line, the temperature swings here tend to be more extreme.
Dunstable Garage Doors offers seasonal maintenance and spring inspections designed for exactly these conditions. Catching a worn spring in October is far cheaper and less stressful than an emergency replacement in January when you're already late for work.
If you think your springs might be showing signs of trouble, don't wait. Book a service appointment before the next cold snap hits.
Q: How do I know if my garage door spring is broken versus just worn? A broken spring usually means the door won't open at all, feels extremely heavy, or the opener strains and then stops. A worn spring may show subtler signs. sluggish movement, uneven lifting, or unusual sounds. Either way, have a technician inspect it before the situation gets worse.
Q: Can I still use my garage door if a spring is broken? No. you should stop using it immediately. Operating the door forces the opener to carry the full weight, which can destroy the motor and create a safety hazard. Disconnect the opener and leave the door in the closed position until a technician can assess it.
Q: How long does spring replacement take? A standard torsion spring replacement by a professional technician typically takes one to two hours for a single-car garage door. Two-car doors or systems with complications may take a bit longer. Most technicians carry common spring sizes on their trucks, so same-day repairs are often possible.