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Broken Torsion Spring? Here's What You Need to Know
- Apr 15
- 8 min read
That loud bang you heard from the garage? It was probably your torsion spring snapping under tension. This is one of the most common garage door failures, and it leaves your door too heavy to lift safely.
Below, you'll find how to confirm the spring is broken, what steps to take next, and what professional repair actually involves.
Signs your garage door torsion spring is broken
A broken garage door torsion spring typically announces itself with a loud bang from the garage, a visible 2-3 inch gap in the spring coil above the door, and a door that suddenly feels far too heavy to lift. The torsion spring is that tightly wound metal coil sitting on a shaft right above your garage door opening. It stores energy when the door closes and releases it when the door opens, doing most of the heavy lifting so your opener doesn't have to.
If you're wondering whether your spring has actually failed, here's what to look for.
Loud bang or snapping sound
Most people first learn about a broken spring after hearing what sounds like a firecracker going off in the garage. That noise is the spring snapping under tension and releasing all its stored energy at once. You might hear it even when nobody's home, since springs can break while the door sits closed and idle.
Door won't open or opens only halfway
When you hit the opener button and the door rises just a foot or two before stopping, that's a strong sign the spring has failed. Your opener motor isn't built to lift the full weight of the door by itself. Without a working spring to share the load, the motor strains and shuts off to protect itself from burning out.
Visible gap in the spring coil
Take a look at the spring mounted above your door. A healthy spring looks like one continuous coil with no breaks. If you spot a clear separation in the middle, usually 2-3 inches wide, the spring has snapped. This visual check is the most reliable way to confirm the problem.
Door feels unusually heavy when lifting
A working torsion spring offsets most of your door's weight, which can run anywhere from 150 to over 400 pounds depending on size and material. Try lifting the door manually using the handle at the bottom. If it feels extremely heavy or barely budges, the spring is no longer doing its job.
Cables are loose or hanging
The lifting cables on either side of your door work together with the spring system. When a torsion spring breaks, it releases tension throughout the whole setup, often causing cables to go slack or hang loose. If you notice limp cables or cables that have come off their drums, avoid touching them. They can still hold partial tension.
What to do when your garage door spring breaks
Finding out your spring has broken can feel stressful, especially if your car is stuck inside. Here's how to handle the situation safely and avoid making things worse.
1. Stop using the door immediately
Continuing to operate the door, whether by hand or with the opener, can damage the motor, cables, or door panels. Leave the door wherever it currently sits.
2. Disconnect the automatic opener
Pull the emergency release cord, usually a red handle hanging from the opener rail, to disconnect the door from the opener. This stops the motor from straining against a door it can't properly lift. If the door is open when you do this, be careful. It may drop once disconnected.
3. Do not attempt a DIY repair
Torsion springs hold extreme tension, even after they've broken. Replacing them requires specialized winding bars and precise knowledge of spring calibration. Without proper training and tools, the risk of serious injury is high. This is one job best left to someone with experience.
4. Call a professional garage door technician
Most garage door companies offer same-day service for broken springs since it's such a common and urgent problem. At MNB Garage Doors, our technicians are available around the clock for emergency repairs across the GTA.
Why broken garage door springs are dangerous
Torsion springs store a lot of energy, enough to lift a door weighing several hundred pounds. When that energy releases unexpectedly, the results can be serious.
High tension stored in the spring: A snapping spring can whip around violently, causing cuts, broken bones, or worse injuries
Heavy door without support: Without spring tension, the door can slam shut suddenly, risking injury to anyone nearby or damage to vehicles
Cable whip: When springs fail, the connected cables can snap and lash out unpredictably
Opener strain: Running the opener with a broken spring can burn out the motor, turning one repair into two
These risks explain why professional repair makes more sense than attempting a fix yourself.
Can you replace a torsion spring yourself
Technically, yes. But torsion spring replacement is one of the most dangerous DIY home repairs you can attempt. The spring requires precise winding with specialized steel bars, and even a small mistake can cause the spring to release violently.
Beyond safety, improper installation often leads to unbalanced doors, premature spring failure, or damage to other parts. Many manufacturers also void warranties if springs aren't installed by a qualified technician.
For most homeowners, the cost savings of DIY simply aren't worth the risk. A professional can complete the job safely in about an hour, with proper calibration and
a warranty on the work.
How garage door torsion springs work
Understanding the basics helps explain why a broken spring creates such a problem. Torsion springs mount on a metal shaft directly above your garage door opening. When you close the door, the springs wind up and store energy. When you open it, that stored energy releases gradually, helping lift the door smoothly.
This is why a door with a broken spring feels impossibly heavy. You're suddenly trying to lift the entire weight yourself, without the mechanical advantage the spring provides.
How long do garage door springs last before breaking
Torsion springs are rated by "cycles," where one cycle equals one complete open-and-close operation. Most standard springs are rated for around 10,000 cycles, while higher-quality springs can last 25,000 cycles or more.
Several factors affect how quickly springs wear out:
Factor | Impact on Spring Life |
Frequency of use | A family using the garage 4-6 times daily wears springs faster than occasional use |
Climate | Extreme cold makes metal brittle and more prone to cracking |
Maintenance | Regular lubrication reduces friction and extends lifespan |
Spring quality | Higher-cycle springs cost more upfront but last significantly longer |
If one spring breaks, the other has experienced the same wear and will likely fail soon. This is why most technicians recommend replacing both springs at once.
What to expect during garage door coil spring replacement
Knowing what happens during a service call can help you feel more prepared. Here's the typical process from start to finish.
Inspection and assessment
A technician starts by examining your entire door system, not just the broken spring. They'll check cables, drums, tracks, and the opener to identify any related damage or wear that could cause problems later.
Safety preparation
Before any work begins, the door is secured in place and any remaining tension is carefully released from the old spring. The work area is cleared to ensure safe access.
Spring removal and installation
The broken spring is removed from the torsion shaft, and a new spring of the correct size and strength is installed. Spring sizing matters. Using the wrong spring leads to poor door balance and premature failure.
Tension adjustment and calibration
Using specialized winding bars, the technician winds the new spring to precise tension specifications. This step is critical for smooth, balanced door operation and is where DIY attempts most often go wrong.
Final testing and safety checks
The door is tested multiple times to verify smooth operation and proper balance. Safety features like auto-reverse sensors are also checked to confirm everything works correctly.
Garage door torsion spring replacement cost
Repair costs vary based on several factors, though most homeowners find professional spring replacement reasonably affordable given the complexity and risk involved.
Factor | How It Affects Cost |
Spring type and quality | Higher-cycle springs cost more but provide better long-term value |
Single vs. double spring system | Two-spring systems have higher parts costs |
Labor and service call fees | Emergency or after-hours calls may carry additional fees |
Additional repairs needed | Damaged cables or drums add to the total |
At MNB Garage Doors, we provide free estimates with clear, upfront pricing. No pressure and no surprise charges.
Replacing one or both torsion springs
When one spring breaks, you might wonder whether replacing just that one makes sense. While it's technically possible, most experienced technicians recommend replacing both springs at the same time.
Here's the reasoning: both springs have experienced identical wear over the same period. If one has failed, the other is likely close behind. Replacing both at once means one service call instead of two, ensures balanced door operation, and prevents uneven stress on the new spring.
A trustworthy technician will explain your options honestly and let you decide. At MNB Garage Doors, we focus on the work that truly needs to be done. No pressure, no upselling.
Torsion springs vs extension springs
Not all garage doors use torsion springs. Older or lighter doors sometimes use extension springs instead. Here's how the two types compare:
Feature | Torsion Springs | Extension Springs |
Location | Above the door on a horizontal shaft | Along the sides of the door tracks |
How they work | Wind and unwind to store and release energy | Stretch and contract like a rubber band |
Safety | Generally safer because they're contained on the shaft | Can be hazardous without safety cables |
Best for | Heavier doors and frequent use | Lighter doors and lower-use applications |
Most modern garage doors use torsion springs because they're safer, more durable, and provide smoother operation. If you're unsure which type you have, a quick look above and beside your door will tell you.
MNB Garage Doors handles both spring types across all our service areas.
Get your broken garage door fixed fast in the GTA
A broken torsion spring doesn't have to derail your day. MNB Garage Doors provides fast, reliable spring replacement across the entire Greater Toronto Area, with 24/7 emergency service for urgent situations.
Our experienced technicians arrive ready to diagnose the problem, explain your options clearly, and complete the repair efficiently. We stand behind honest service and quality workmanship. No pressure, no upselling, just dependable results.
Frequently asked questions about broken torsion springs
Can I manually open my garage door if the torsion spring is broken?
You can try, but the door will be extremely heavy and difficult to lift safely. Leaving it in place and calling a technician helps avoid injury or further damage.
Will my garage door fall if the spring breaks while it's open?
If the door is already open when the spring breaks, it may stay in place or slowly descend. Avoid standing under the door and have it repaired before using it again.
How long does professional garage door spring replacement take?
Most torsion spring replacements are completed in about an hour, depending on the door system and whether additional repairs are needed.
Does homeowner's insurance cover broken garage door springs?
Standard homeowner's insurance typically does not cover spring replacement, as it's considered normal wear and tear. Check your policy for specific coverage details.
What causes a garage door spring to break suddenly?
Springs break due to metal fatigue from repeated use over time, often accelerated by cold weather, rust, or lack of lubrication.
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