Not many people are aware that they have garage door springs on the garage door. The springs are the lifting force that assist in lifting the garage door. The most common type of springs are called torsion springs and they are located above the garage door. What they do is they are attached to a torsion tube that has cables that are attached to the bottom of your garage door. The springs are wound up and as hey try to unwind they cause the bar to spin in turn lifting the door. As you may know with metal the more you twist it the quicker it will become weak and break. Most people get 7-10 years out of a spring but if you use it more often than the normal 3 times per day it will break more quickly. Spring are on of the most important parts to a garage door because without them your opener can not lift the door as it will be too heavy Most doors weigh between 200-300 pounds. Here at Overhead Door & Operator we specialize in spring replacement. Be sue that whomever you choose to change your spring that they are putting the right springs on your door. The door should be balanced at every panel and hold itself when not attached to the opener. Please call Overhead Door & Operator for all of your garage door repairs at 850-477-0333 or call direct for a specific location by checking here: garage door repair locations.