Go with 1 2 hp for a double door and 3 4 hp for a door that has a wood or faux wood overlay they can be heavy.
How to install a belt drive garage door opener.
Install a new belt drive model and enter stealth mode when operating your garage door.
Take the button wire up the wall and along the top of the ceiling so that you can attach to the power unit.
Garage door openers are available with a chain drive screw drive or belt drive.
Openers have a set opening speed so installing an opener with a higher horsepower won t open your door any faster.
Connect the door bracket so that is in the middle of the garage door and follow the distance the manual suggests.
This video will show you how to assemble and install a chamberlain garage door opener in a garage with a sectional door and a finished ceiling.