How can we help you? How much weight can a stair lift hold? 0 out of 2 found this helpful We have a variety of stair lifts available that can support weights up to 600 lbs. Was this helpful? Yes (0) No (1) Category: General Related Questions What happens in the case of a power outage? Can you install a stair lift outside? When do I need a stair lift? Can I stand on the footrest instead of sitting on the seat?