Choosing A Garage Door Opener
One basic fact to be aware of is that garage door openers do not provide the force that opens and closes the door. Instead, they regulate the distance that the door moves and secure it in place once it is closed. The power actually comes from the spring system attached to the door. The electric opener allows the user to close and lock the garage door with the push of a button.
The electric motor that allows the door to move is the most complicated component of electric garage door openers.
