The torsion spring is found above the garage door, It creates the twisting motion known as torque. The torque of the torsion spring lift the door’s weight and is how you’re able to manually open your garage door when needed.
You need to make sure you get a torsion spring specifically for your garage doors weight.
If you don’t get the correct torsion spring or it isn’t installed properly, it can add stress to other parts of your garage door and the garage door opener. Make sure your torsion spring is installed by a professional.
Also, a poorly installed torsion spring can cause damage to your door and opener. When that happens, you’re in danger of sudden drops which can be incredibly unsafe.