You can install a garage door opener for all Insulated Garage Door sizes and types with the know-how. Many of the electrical and mechanical concepts involved are simple to grasp and can be done yourself, provided you take the necessary safety precautions. 1.First, you should let a professional handle the job if the door is operated by a torsion spring. You can tell whether it is operated by a torsion spring or an extensions spring based on the number of springs it uses. Usually only one torsion spring is necessary, however some types such as residential garage doors use two extension springs per side of the door. A torsion spring is much more difficult and dangerous to deal with as it the capacity to produce the energy necessary to raise an entire door. An extension spring being easier is something that you can handle.