How can we help you? How long does the installation take? 1 out of 4 found this helpful Depending on the stair lift model selected, an experienced installer can complete your install in as little as 2 hours. Our Home Access Specialist will test the unit, demonstrate its functions, and stay as long as necessary to ensure that you are comfortable with the operation of your new stair lift. Was this helpful? Yes (1) No (2) Category: General Related Questions Are stair lifts safe? What are the safety features on a stair lift? Are my stairs suitable? Can you install a stair lift outside?