The garage door springs are part of your door’s counterbalance system. The counterbalance system is what allows you to open and close the door easily. When a garage door is properly installed, with all the correct components, you will be able to lift or lower the door easily by hand and it will sit in the middle (½ way) of the opening. If your door slams down, flies up quickly, or is uneven, the springs are in need of adjustment.