A standard maintenance visit covering lubrication, hardware tightening, track alignment, and a spring and cable inspection runs about 45 minutes to an hour on a single door. Doors still running original 1983-era extension spring hardware sometimes take longer, because we're checking pulleys and the safety cables that should be threaded through the extension springs - a lot of installs from that period skipped them, and we won't leave a door without one if it's missing. We travel the 11 miles out from Bartlett for these calls, so we schedule them rather than running same-day unless something's already failed. If your opener is the original chain-drive unit, we'll flag wear on the sprocket and rail during the same visit instead of making you book a second trip for it.