On one-piece doors with side springs, you open the door to relieve the spring tension, and simply swap out the springs on the opener-arm mechanism; there are no cables or pulleys to deal with, and the springs have internal safety rods. Some doors have tensioners that maintain moderate tension when the door is open all the way, and on these you'll have to loosen the tensioner in order to remove the spring.
A typical version of an overhead garage door used in the past would have been built as a one-piece panel.[1] The panel was mounted on each side with unequal parallelogram style hinge lifting mechanism. Newer versions of overhead garage doors are now generally built from several panels hinged together that roll along a system of tracks guided by rollers.[1] The weight of the door may be 400 lb (181.4 kg) or more, but is balanced by either a torsion spring system or a pair of extension springs.[2] A remote controlled motorized mechanism for opening garage doors adds convenience, safety, and security.[3]

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Aging garage door springs cause the door to effectively "weigh" more as the steel loses its resiliency. With new springs, a heavy garage door should take no more than about 10 pounds of force to lift into an open position. With springs nearing the end of their lifespan, the force required to lift the door can be considerably more, since a garage door may weigh 200 pounds or more.

Garage door springs come in two styles: torsion (see above), which mounts on the header above the door, and extension (Photo 1), which floats above the upper roller track. In the past, extension springs were safer to install but didn’t have containment cables running through the center of the spring. Without cable, these springs become dangerous, heavy whips when they break. They also tend to be noisier than torsion springs, and we recommend you use them only if you don’t have the 12 in. of headroom above the door that a torsion spring requires.

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Not only was the upward-lifting garage door and the electric garage door opener invented by Overhead Door Corporation’s founder C.G Johnson in the 1920s, but we also have a tradition in excellence for garage door repair, service and maintenance. Even with the most reliable products problems can arise and when they do it’s important to know who to contact to fix these issues while providing solutions to prevent future complications.


"We had an unusual repair requirement. We have horizontal sliding steel doors on our 1950's equipment shed. The upper track was damaged by a roofer's forklift while they were loading supplies onto the roof. The track is made out of very heavy steel, not like the track in today's doors. Toby, responded to my request very quickly and came out of his way to inspect the damage. Although it was not something that he had encountered before, he was able to fix the track and the door is operating better than it has in years. Thank you."
Would have appreciated the technician to have explained in better detail about the quality of the first doors we received in our home. The garage doors that were installed recently were an upgrade. I would have selected the better quality of doors with the first installation if it had been explained in better detail and time of decision with the first doors. But, I really love the doors that were recently installed! Explained much better with the new doors. Time was well spent on my decision making and the technician this time was very helpful and knowledgeable. Thank You! Cathy Walsh
If you have decided to replace your springs, if you are sure your door had the correct springs, and if you are ready to buy new ones, we recommend that you measure your spring or springs following the instructions in Step 4 below. Measuring springs can be difficult; most individuals, even garage door technicians, sometimes have difficulty measuring torsion springs. Ordering incorrect springs wastes time and money.
Replacing torsion springs is done with the door closed. You start by carefully unloading all of the springs (most standard-size doors have two; any broken spring will already be unloaded), using the winding bars. Then, you unbolt the springs from the central rod bracket, disconnect the cables from the pulleys, and loosen the pulleys and slide them off of the rod. Next, you swap out the springs, reinstall the pulleys and cables, and secure the inside ends of the springs to the central bracket. Finally, you wind up both springs (securing them with two setscrew bolts on the winding cones) and test the door for proper spring tension. Often, springs need an extra quarter-turn or two to get the door balance just right.

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As mentioned, the only time you should attempt to open a garage door with a broken torsion spring is during an emergency. Otherwise, you should contact a service technician for emergency repairs. We provide same-day garage door service for people just like you who find themselves stuck and unable to move due to a faulty torsion spring. For prompt, reliable service any time of the day or night, please contact us.
It is very important that the replacement springs are calibrated for the weight of your door. Using the wrong size garage door springs will caused the to not function properly and could also cause the opener to break much quicker. Replacing extension springs can be very dangerous and if done wrong can harm someone using the garage door. Make sure you call the Garage Door Doctor to ensure your garage is repaired properly!
Prices, promotions, styles, and availability may vary. Our local stores do not honor online pricing. Prices and availability of products and services are subject to change without notice. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted.

My garage door has been acting up. Not wanting to work sometimes. I noticed the blue light flashing on the opener when I push the remote button. Today it will not open. That is the only way in, so I can't go in the garage from inside the house. I can't pull the cord to release the belt drive. How do I open it now? I never did run wires to the manual button into the house. I have to use the opener. Only have one I can find now. It is not working. I need in there now.

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Everyone wants to save money. Unfortunately, there are some areas you just can’t skimp on. This includes garage door springs. As much as it might be tempting to by smaller or cheaper springs, or maybe to buy one spring where two are needed, these attempts to save money will only end up costing more money in the end. When you buy the proper springs, they’ll last for years. When you cut corners to save money, the springs will wear out faster, meaning they’ll need to be replaced much sooner.
After you’ve ordered your new garage door, we’ll perform a site inspection to confirm your door size. We’ll contact you to schedule the installation, and our professional installers will do the rest. They’ll deliver your door, take down the old door, reconnect your opener if there is one, seal your perimeter and provide a final walk-through where they’ll clean up the area and haul away your old door. Additional fees for haul away may apply in some markets. We are happy to provide answers to questions you may have at the time of your garage door and opener installation.
Your decision on whether to try and replace a broken spring may depend on what type of springs you have. Garage door springs come in two main types: extension and torsion. Identifying which type you have is easy. If your door system has a long, skinny spring running parallel to each horizontal door track, then you have extension springs. If your door has one or more beefy springs on a metal rod parallel to, and directly above, the door opening, then you have torsion springs. Both of these springs are found on standard sectional garage doors. If you happen to have an old one-piece, swing-up door with vertical springs at both sides, you also have a variety of extension springs, sometimes called side springs.
Once the springs break, quite a bit of tension is put on the door cables, and they will often break next. When these cables break, they will snap and forcibly fly out like a broken rubber band. Think about how much it hurts to be snapped by a broken rubber band, and then multiply it by a hundred to account for the size and weight of the garage door cables. https://www.youtube.com/e/Z_eZc-kh40c
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