Installing a new garage door and opener may seem daunting at first, but if you take your time and do the job step-by-step, it's a good weekend project. It will take from nine to 12 hours for most doors, then another two to four hours for the opener. You will need help for some portions, such as lifting out the old door and lifting the new door up until the tension springs can be installed (some doors may weigh up to 400 pounds). You may need to remove an old door, or you may be installing in new construction. In this DIY video tutorial, you'll find step-by-step instructions for installing a garage door and opener in your own home. For more, or to get started on your own garage door installation project, watch this how-to.