A straight door swap on an existing opening, no header or slab work needed, is usually a one-day job once we're on site - old door and track out, new door, springs, and opener hardware in, balanced and tested. If the header needs reinforcing or the slab needs shimming, add time for that before the door itself goes in. We test the auto-reverse safety sensors and torsion spring balance before we call it done, every time, no exceptions - that's not optional even on a simple swap. Given the 18-mile trip from Morgantown, we schedule Kingwood installs as full-day jobs rather than splitting a crew's day between two towns, so the date we give you is the date we show up, not a maybe.