How can we help you? Can you install a stair lift outside? 0 out of 1 found this helpful Yes, we have stair lift models available for outside use. Was this helpful? Yes (0) No (0) Category: General Related Questions Can I stand on the footrest instead of sitting on the seat? How does the stair lift attach to the stairs? How long do the batteries last? What happens in the case of a power outage?