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 Can I take the arms off of the stair lift to make the seat wider? I have a landing in between two straight flights of stairs, what is the solution to this? What are my other options? How does the stair lift attach to the stairs?