An automatic garage door works on the basis of an electric motor that raises the door up and down from a signal from a remote controller. There is also a very strong spring that is situated at the back of the garage near the ceiling, and it is connected to the door as well. The purpose of the spring is to help the door carry the load. As the door opens, the spring contracts, and as the door closes, or lets down, the spring expands.
Garage door springs may not be something that you think about often. However, they are one of the hardest working parts of any garage door. They help bear the weight of the door as it goes up and down. Because of this, when a spring breaks, your door won’t be able to function properly. That means that if you want to get your door back in good working order again, you will need to replace the spring.