A snapped torsion spring turns the door into dead weight — the one garage door failure that is both an emergency and genuinely dangerous to touch. The routed repair is a same-visit job: both springs replaced as a matched pair, wound to the door’s measured weight, balance-verified before handback.
// SERVICE READOUT
The three things that decide whether a spring repair job goes well — before price ever comes up.
A torsion spring stores the energy that lifts 150–300 pounds of door. When fatigue wins, it releases in one crack — the classic bang from the garage — and nothing else in the system can carry the load. The door should not be operated at all until the pair is replaced.
Both springs on a shaft share an identical cycle history. Replace only the broken one and the survivor — equally fatigued — follows within months, taking a second service call with it. Pair replacement also keeps the winding balanced so the door lifts level.
Springs are sold by fatigue life: 10,000 cycles standard, 15,000–25,000 upgrades. At four openings a day, that is the difference between roughly seven years and well past fifteen. Insist the quote names the rating — it is the one line that decides how long the repair lasts.
// HAVE READY WHEN YOU CALL
Thirty seconds of triage saves a mis-routed call — match the fault, then dial.
You heard the bang and the door will not lift; the door feels enormously heavy on the manual release; there is a visible gap in the coil above the door; the opener strains, lifts a few inches and gives up. All four are counterbalance failures — spring territory.
The motor hums without moving the door, the remote died but the wall button works, or the door reverses at the floor. Those faults live in the opener and its safety circuit, not the springs — different page, different parts on the truck.
Nothing is broken but the door is loud, drifting or past its seventh year on original springs. A measured visit reads the fatigue and books the replacement on your calendar instead of the coldest morning of the year.
The shaft above the door is the machine that does the lifting. Torsion springs wound around it store torque; cables running from drums at each end down to the bottom brackets convert that torque into lift. Wind the springs to the door’s measured weight and the whole assembly floats — a 200-pound door that one hand can raise. Every part of the system is sized against that weight: wire gauge, drum diameter, cable strand, track radius.
That is why spring work is measurement work. A spring that is close-but-wrong leaves the door heavy at the floor or slamming at the top, strains the opener every cycle, and wears the cables unevenly. And it is why the balance test — door floating at half height with the opener released — is the only handback proof that matters. If the door floats, the mathematics of the whole counterbalance is right; if it fights, something in the chain was guessed.
One more number worth knowing before the visit: springs are consumable by design. The counterbalance is engineered to be re-sprung several times across a door’s structural life, the way tires turn over on a car. A first or second replacement inside the expected window is the system working — which is why the cycle-rating decision at each replacement matters more than the failure that triggered it.
// TERMS THAT DECODE THE QUOTE
The wound steel spring on the shaft above the door that stores lifting energy by twisting — the modern standard, contained on its shaft at failure.
A spring’s fatigue-life estimate in open-close cycles at working torque: 10,000 standard, 15,000–25,000+ upgrades.
The slotted fitting at the spring’s end that winding bars seat into — the only safe interface for adding or releasing tension.
The same discipline on every dispatch — city pages carry the full stage-by-stage detail with local code and climate facts wired in.
Shaft locked against rotation, opener unplugged, door clamped below the rollers — the stored energy leaves the system before any wrench touches it. A spring-dead door hangs its full weight on hardware never sized to hold it alone, which is why containment is the first billable minute of every legitimate spring visit, not a formality.
Wire diameter, inside diameter, overall length and wind direction — four numbers matched to the door’s measured weight, not read off a chart by door width. The same 16-foot opening can take dozens of spring specs depending on panel construction, and close-but-wrong is what produces floor-heavy doors and strained openers within the year.
Solid winding bars seated fully into the cone, quarter-turn by quarter-turn, set screws torqued to the shaft at final tension. Screwdrivers, rebar and improvisation are how emergency rooms meet garage doors; the bars are cheap, and any licensed crew treats them as non-negotiable equipment rather than a preference.
With the opener still disconnected, the door must float motionless at half height and rise with one-hand effort — proof the new pair matches the door’s weight through the whole arc. Then the opener reconnects, relearns its travel, and the reversal test runs against a block. That sequence, demonstrated in front of you, is the receipt.
Describe the door, the symptom and your ZIP — routing finds the licensed contractor while you're on the line.
Call (800) 555-0167
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04 No prices on this page by design — routing pages carry the number, not the numbers. These are the real levers behind any quote, so the conversation at the door starts honest.
The largest lever you control: 10,000-cycle standard against 15,000–25,000 upgrades. The steel costs modestly more; the visit costs the same. Buying double the fatigue life at replacement time is the cheapest longevity money in the whole system.
Heavier doors take thicker wire and more winding turns — wood, insulated steel and double-wide doors all sit above builder-grade singles. Weight decides the spec; the spec moves the parts bill. Measured weight, not door width, is the number a real quote is built on.
Two-spring doors are quoted as pairs by every reputable contractor — the labour is the visit, the second spring is only a part. A single-spring quote on a paired door is a repeat-call subscription, not a saving.
Months of lifting against a dying spring stresses cables, bottom fixtures and the opener gear. If the failure ran a while before the call, expect the honest quote to flag what else is near its limit.
Every city below carries its own spring repair page — local spring-life data, code answers and the routed line. Full list on the coverage directory.
Genuinely dangerous — not liability-boilerplate dangerous. A wound residential spring stores serious mechanical energy held back by two set screws; release it wrong and the winding bar, the cone, or the spring itself moves faster than a hand can. Emergency departments see the results every winter: fractures, amputated fingers, facial injuries. Every safe procedure exists downstream of this fact, and so does the licensing.
Four measurements: wire diameter, inside diameter, overall length, and wind direction — all matched to the door’s actual weight, which a pro measures rather than guesses. A spring that is close-but-wrong leaves the door heavy at the floor or slamming at the top, and works the opener against the imbalance every cycle. This is why the same door width can take dozens of different spring specs, and why truck stock depth matters.
Both get replaced, and it is not an upsell. Springs on the same shaft have identical cycle histories: the survivor is as fatigued as the one that failed, and mixing a new spring with a spent one unbalances the winding across the shaft. The labour is the visit itself — the second spring adds a part, not an appointment. One-spring quotes on two-spring doors are how repeat calls get manufactured.
On a two-spring door, both springs have identical cycle counts — when one breaks, the survivor is at the same point in its fatigue life and statistically fails within months. Replacing the pair also keeps the winding balanced across the shaft, so the door lifts evenly instead of racking toward the older spring’s side. Single-spring replacement on a paired door is a known repeat-call generator, which is why reputable contractors quote pairs by default.
One cycle is one full open-and-close. Standard residential springs are rated 10,000 cycles; upgrades run 15,000 to 25,000 and beyond. The rating is a fatigue-life estimate for the wire at its working torque — not a warranty, but a good actuarial figure. At four cycles a day, 10,000 cycles is roughly seven years of service. Any quote for spring replacement should state the rating; the difference between tiers is modest against the labour cost of the visit.
Physically yes, safely no. The spring exists because the door itself can weigh 150–300 pounds; with the counterbalance gone, that full weight is on whatever lifts it. Two adults can raise a spring-dead door in a genuine emergency — car trapped, medical need — using rigid props and never body parts under the door. Outside an emergency, wait for the pro: the off-balance lift is how tracks bend and hands get caught.
Torsion springs mount on a shaft above the door and counterbalance by twisting; extension springs stretch along the horizontal tracks and counterbalance by extending. Torsion is the modern standard — smoother, longer-lived, and contained on its shaft when it breaks. Extension systems, common on older and lighter doors, require safety cables threaded through each spring so a failure doesn’t whip hardware across the garage. Conversions from extension to torsion are a routine upgrade during replacement.
Steel loses ductility as temperature drops, and micro-cracks that were stable all summer propagate under cold-morning load. Meanwhile thickened lubricant and stiffer hardware raise the torque demand on every lift. The combination makes the first sustained cold snap the classic spring-failure window — a pattern visible in service data everywhere winters are real, and the reason pre-winter inspections exist.
Same-day is common for morning calls — spring failures get dispatch priority because the door is unusable and the garage may be holding a vehicle. The routed contractor quotes their real window on the call; most spring jobs finish in a single visit because common sizes ride on the truck.
An independent licensed garage door contractor covering your ZIP — the routing network spans 11,980 ZIP codes across 38 states. The call is free, and this site is compensated by the network when calls connect; the repair relationship is entirely between you and the contractor.
No — and this one is safety, not caution theatre. With the counterbalance gone, the opener is lifting weight it was never rated for, the remaining hardware is overloaded, and pulling the manual release mid-travel hands the full door to gravity. Park the door where it sits, keep vehicles and people clear of the opening, and let the routed pro reintroduce tension the controlled way.
