The Loud Bang You Just Heard
It sounds like a gunshot. People often think a window broke or a shelf collapsed — then they walk out to the garage and find the door won't move. That bang was the torsion spring above the door snapping under tension. It happens to thousands of garage doors every year, and it's the single most common reason a door suddenly stops working. The good news: it's a routine, same-day fix for a trained technician. The bad news: it is genuinely dangerous to handle yourself, so the most important thing right now is to leave the door alone and call a pro.
Chattanooga Garage Door Pro is a local referral service. One call to (423) 558-3585 connects you with a licensed, insured technician working right here in Chattanooga or one of the surrounding suburbs, often available the same day. There's no call-out fee, the estimate is free, and you'll get a written, upfront price before any work begins.
Why You Shouldn't Try to Open It
When a spring breaks, the door becomes dead weight — often 150 pounds or more with nothing counterbalancing it. Forcing the opener to lift that weight will burn out the motor, strip the drive gears, or cause the door to drop suddenly. If you try to lift it by hand, you're holding up the full weight of the door with worn cables and hardware that were already at the end of their life. Just leave the door where it is. If your car is trapped inside and you absolutely have to get it out, wait for the technician — they can release the tension safely and get the door open in minutes.
Signs It's Definitely a Broken Spring
- A loud bang from the garage, followed by a door that won't open
- The opener motor runs but the door barely lifts (or jerks and stops)
- The door feels extremely heavy when you try to raise it by hand
- You can see a visible gap in the torsion spring above the door
- The door is hanging at an angle, or one side has dropped
Any of these — especially the bang followed by a stuck door — points to a spring. A technician confirms it in seconds, but if you're trying to figure out what's wrong before calling, those are the tells.
Torsion vs. Extension Springs (Quick Primer)
There are two kinds of garage door springs, and your tech will know at a glance which you have. Torsion springs mount on a metal shaft above the door and twist to store energy. They're more common on modern doors and on most Chattanooga homes built in the last twenty or so years. Extension springs stretch along the horizontal tracks on either side of the door — older homes often have these, and they should always include safety cables. Whichever type you have, if your door uses a pair we strongly recommend replacing both at once. They wear together, so the second is right behind the first, and one service call is always cheaper than two.
What Same-Day Replacement Looks Like
Call (423) 558-3585 and we'll match you with a local pro suited to your problem and your neighborhood. They arrive with the common spring sizes already stocked on the truck. After confirming the spring type and size, you get a written, upfront price. If you approve it, they release the remaining tension safely, swap the spring (or pair), rebalance the door, lubricate the moving parts, and test the opener's force settings before they leave. Most spring jobs are wrapped up in 30 to 60 minutes on site, and the work is backed by parts and labor warranty from the technician.
Related Repairs & Service Areas
A broken spring can stress other components. While the tech is there, ask about your opener, worn cables and rollers (covered in our general repair page), or — if your door has had its day — a full new door installation. Our broader spring repair page covers preventive maintenance and tune-ups too.
We serve all of greater Chattanooga, including Hixson, Ooltewah, East Brainerd, Red Bank, and Soddy-Daisy.
Broken Spring FAQs
How much does garage door spring replacement cost in Chattanooga?
Pricing depends on the spring type and size, whether you need one or a pair, and your specific door. Your technician gives you a written, upfront price before any work begins, and you can decline at no cost. We strongly recommend replacing both springs at once if your door uses a pair — it keeps the door balanced and saves a second service call when the other one fails.
Can I replace a garage door spring myself?
No — please don't. A wound torsion spring stores hundreds of pounds of force, and the winding bars can kick back violently if they slip. Every year emergency rooms see serious hand, face, and eye injuries from DIY spring jobs. A trained technician has the right winding bars, knows how to release the tension safely, and is insured if anything goes wrong. The cost of a professional replacement is small next to a trip to the ER.
How long do garage door springs last?
Standard springs are rated for around 10,000 cycles — roughly 7 to 10 years for an average household that opens the door four to six times a day. Heavier daily use shortens that window. Higher-cycle springs (rated 20,000 or more cycles) cost a bit more upfront but can double the lifespan; ask your technician if they make sense for your home.
Why did my garage door spring break in cold weather?
Cold mornings are when most springs let go in Chattanooga. Steel becomes slightly more brittle in cold temperatures, and a spring that was already at the end of its cycle life is most likely to snap during that first cold-weather opening of the day. It's not really the cold that caused the failure — it just sped up an inevitable one.
Should I replace one spring or both?
If your door uses two springs and one has broken, we strongly recommend replacing both at the same time. They wear at roughly the same rate, so the second is usually close behind. Replacing both at once keeps the door balanced (so the opener doesn't strain) and avoids paying for a second service call when the other fails a few months later.