There are two types of garage door springs.
How to instal a garage door spring.
In the past extension springs were safer to install but didn t have containment cables running through the center of the spring.
This can still be done when only one extension spring is broken.
Unplug the garage door opener and clamp the door to the track.
A couple of carabiners can.
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.
Garage door springs come in two styles.
A pair of new springs cost about 25.
Disconnect the garage door opener so the door remains closed.
Weigh your garage door.
Disengage the opener from the door.
The doors with two springs are easy to replace.
You may need to use a 2x4 or some other object to pry the garage door open.