The doors with two springs are easy to replace.
How to instal a garage door spring.
A pair of new springs cost about 25.
You may need to use a 2x4 or some other object to pry the garage door open.
There are two types of garage door springs.
Torsion see above which mounts on the header above the door and extension photo 1 which floats above the upper roller track.
Disengage the opener from the door.
Disconnect the garage door opener so the door remains closed.
Some garage door openers have a neutral position for the trolley disconnect.
In the past extension springs were safer to install but didn t have containment cables running through the center of the spring.
A couple of carabiners can.
Weigh your garage door.
Garage door springs come in two styles.
Use locking pliers or a c clamp to secure the door to the track to keep it from opening when you release the tension on the springs.