Torsion Spring Replacement: comparing quotes

Usually a little. A balanced door presents a much lighter load than a door with a broken spring, so the opener's force settings are reset to suit it, and the travel limits are checked so the door seals at the floor and stops cleanly at the top. The technician then runs the reversal test and the photo-eye check to confirm the safety system responds correctly with the new balance.

Shaft condition

A bent, badly rusted or worn shaft is replaced so the drums and bearings turn true. Coupled two-piece shafts and their coupler are checked at the same time.

Opener reconnection and testing

Resetting force and travel limits and running the reversal and photo-eye tests are part of the visit. An opener with worn gears or a slipping trolley uncovered during testing becomes a separate item.

Door size and weight

A double-width door, a solid wood door or a thick insulated door weighs far more than a single-width steel panel, calling for heavier wire, longer coils or more springs to balance it.