Garage Door Opener Replacement

Because the operator is protecting the door. Its force setting is tuned to the small effort a balanced door needs, so a seal glued to the concrete by ice registers as an obstruction and the door heads back up rather than ripping the rubber or bowing the top panel. Loosen the seal with a plastic scraper or a hair dryer along the sill, then try again; a shovelled threshold before a cold night keeps it from recurring.

Sensors and head unit are made for each other; a board reads its own maker's sensors, often a particular generation of them, so the pair in the box is what goes on the wall and the old ones come down with the old opener. The new pair sits low at each side of the doorway, roughly a hand's width above the concrete, and the technician confirms their indicator lights are steady before the door is tested against the beam.

Both move the same doors, so the choice is about sound and setting. Chain is the sturdy, simple workhorse and a fine fit for a detached garage or a workshop where a little noise is nobody's concern. Belt is the pick when a bedroom, nursery or office shares a wall or floor with the garage, because it starts and stops softly and hums rather than rattles. If the ceiling is crowded, a wall-mounted unit beside the spring shaft removes the rail altogether.