A straight torsion spring swap on a standard door, once we're on site with the right spring on the truck, is a job measured in an hour or so of work, not a half day. An opener replacement takes longer, since it means pulling the old unit, mounting the new one, and running the safety sensor alignment properly rather than eyeballing it. What we can't promise from Columbia is a fixed arrival window - Severn sits about 10 miles out, and depending on where the truck is on a given day, that's part of the trip, not the repair itself.
If a job turns out to need a part that isn't standard stock - an older hardware size, a discontinued opener model - we'll tell you on site rather than guess, and that sometimes means a second visit. That's the honest limit of what a single call can cover, and it's better to hear it upfront than have it turn into a surprise.