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 if my stair lift is on the opposite end of the staircase? How long does the installation take? Are stair lifts expensive? What happens if my stair lift breaks down?