What is the difference between extension and torsion springs?
Extension and torsion springs are the two types of springs used on garage doors today. Extension springs are coiled springs installed on either side of the door above the door’s horizontal track. They can be installed by the do-it-yourselfer by closely following the installation instructions and safety warnings. Torsion springs include a shaft, spring and a drum assembly, normally installed directly above the door opening. The torsion spring distributes the weight of the door more evenly, particularly with a very wide and extremely heavy door. A standard torsion spring should be installed and removed by a garage door professional, but Holmes’ patented EZ-SET Torsion Spring System can be installed by an experienced DIYer using a 3/8″ power drill.
