Torsion-drive garage door openers are the newest type available. A good choice when the garage ceiling is low, this type of opener is mounted on the wall directly above the door, rather than in the center of the garage. The unit attaches to the door's existing torsion spring shaft or counterbalance. Because an overhead track is no longer needed, the torsion-drive unit provides up to 8-inches of additional head room, which is perfect for taller vehicles.
Priced around $300, they are quieter than chain and screw-drive models.