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 Are stair lifts expensive? Is the stair lift noisy? What are the safety features on a stair lift? Can you install a stair lift outside?