2026-04-19 8 min read
There's a reason broken garage door springs generate more emergency service calls than almost any other repair. One day your door works perfectly; the next morning you press the opener button and nothing happens. or worse, you hear a loud bang from the garage that sounds like something exploded. In Lincoln, NH, where temperatures regularly drop below 10°F and stay there for months, spring failures are even more common than they are in milder climates.
If you've never thought much about your garage door springs, that's completely normal. Most homeowners don't. until the moment they fail. This guide covers what springs actually do, how to spot trouble before it becomes a crisis, and what you should realistically expect from a professional replacement.
Your garage door weighs anywhere from 150 to 400 pounds depending on the material and insulation level. The springs. not the opener. are what actually lift that weight. The opener's job is simply to trigger the movement; the spring does the heavy lifting by storing and releasing mechanical energy each time the door cycles.
Torsion springs mount horizontally above the door on a metal shaft. They're the more common type in modern Lincoln homes, including the condos and townhouses near Loon Mountain and the single-family homes throughout town. Extension springs run along the horizontal tracks on either side of the door and are more common in older construction.
Garage door springs are rated for approximately 10,000 cycles. one cycle being a single open and close of the door. For a family that uses the garage twice a day, that works out to roughly 7 years of average life. In a vacation property in Holderness or Ashland that sits unused for months at a time, springs can last considerably longer. In a busy household where the garage is the primary entry point, you might see them fail in five years or less.
Lincoln's humid continental climate creates conditions that are genuinely hard on spring metal. Cold temperatures make steel more brittle, meaning springs that are already weakened from normal use are significantly more susceptible to snapping during a cold snap. The freeze-thaw cycles that run from November through March. where temperatures might swing 30 degrees in a single day. cause metal to repeatedly contract and expand. Over years, that stress compounds.
This is why the pattern of spring failures in the White Mountains region tends to cluster in late fall and early winter. The spring limps through the mild months just fine, then the first hard freeze pushes it past its limit. It's not bad luck. it's predictable physics.
For more on how Lincoln's winters affect your garage door system as a whole, see our post on winter garage door problems in Lincoln, NH.
A broken spring doesn't always announce itself with a dramatic bang. More often, the warning signs build gradually over weeks or months. Watch for:
- The door feels unusually heavy when lifted manually. Disconnect the opener (pull the red release cord) and try lifting the door by hand. A properly balanced door with good springs should rise with minimal effort and stay at waist height on its own. - The door moves unevenly or jerks as it opens and closes. This often indicates one spring has more tension than the other, or one has already partially failed. - The door is slower than usual, especially in cold mornings. This can mean the springs are losing tension and the opener is compensating. - A visible gap in the spring coil. On a torsion spring, a break will show as a clear separation in the coil. you can usually see it from the garage floor. - A loud bang from the garage, often described as sounding like a gunshot. This is the spring snapping under load. After this, the door typically won't open or will feel impossibly heavy.
If you notice any of these signs, the right move is to stop using the door and call a professional. Continuing to run a door on a failing spring puts extra strain on the opener motor and cables, potentially turning a single-part repair into a much more expensive job. Our FAQ page has more detail on what to expect when you call.
Let's be straightforward about this: torsion springs are one of the few garage door components where the DIY risk is serious and well-documented. These springs are wound under hundreds of pounds of tension. If a spring is improperly installed or slips during winding, it can release that energy violently and instantly. Injuries from spring replacement attempts include broken bones, severe lacerations, and eye injuries.
This isn't a liability disclaimer. it's practical information. The specialized winding bars and technique required to safely wind a torsion spring are not things most homeowners have, and the margin for error is small. Extension springs carry similar risks and require safety cables to be installed properly.
For virtually every other garage door maintenance task. lubricating hardware, replacing weather stripping, adjusting sensor alignment. DIY is completely reasonable. Spring replacement is the clear exception. Get in touch with our team if you're unsure whether your springs need attention.
A professional spring replacement is typically a straightforward job that takes one to two hours. Here's what to expect:
1. Inspection first. A good technician doesn't just swap the broken spring. they inspect the entire system. Cables, drums, rollers, and the opener all get checked, because a spring failure sometimes reveals or causes secondary issues. 2. Matched replacement springs. Springs are sized by wire diameter, inside diameter, and length. Replacing with the wrong spring is a common mistake in DIY attempts. A professional matches the spring to your door's exact weight and configuration. 3. Both springs replaced at once. If you have two torsion springs (most doors do) and one breaks, the other is typically near the end of its life too. Replacing both at the same time saves you from going through the same repair in a few months. 4. Balance test and adjustment. After installation, the technician checks that the door lifts evenly and holds at mid-height without drifting. This balance test is how you confirm the job was done correctly. 5. Opener force recalibration. The opener's force and travel limits are checked and adjusted after spring replacement to make sure everything is working in harmony.
For an overview of all the services available to Lincoln homeowners, visit our services page.
In the Lincoln, NH area, professional torsion spring replacement typically runs between $150 and $350 for a single spring, or $200 to $450 if both are replaced at the same time (which is almost always the better value). The exact cost depends on the spring size, door weight, and whether any secondary repairs are needed.
Extension spring replacement tends to run slightly less. typically $100 to $250 per pair. but always confirm safety cables are included in the job.
If a technician quotes significantly below these ranges, ask about the spring quality and whether the price includes a balance test and opener calibration. Cheap springs wound on the wrong specifications will fail earlier and can put uneven stress on your cables and opener.
Q: Can I still use my garage door if one spring is broken? A: Technically the door may still move, but you shouldn't use it. With one spring broken, the opener motor is carrying load it wasn't designed for, and the door is likely moving unevenly, which stresses the cables and track. Stop using the door and call for service. it's a short wait compared to replacing an opener motor or bent track.
Q: How long does a spring replacement take? A: Most single or double torsion spring replacements take between 60 and 90 minutes for an experienced technician. If secondary issues are found during the inspection, allow a bit more time. It's rarely an all-day job.
Q: Should I replace my springs before they break? A: Yes, if they're showing signs of wear or age. If your door is 7,10 years old, you use it daily, and you've never had the springs replaced, a proactive replacement is worth considering. especially before winter in Lincoln. A spring that fails in February is far less convenient than one replaced on a mild October afternoon.