Harmar's Pinnacle stair lifts are reliable and compact. When folded up, they only occupy 11 inches of your stairway, so walking around them is easy. Additionally, a battery-powered drive system ensures that you'll never be stuck on the stair lift in the event that your home loses power. Pinnacle stair lifts are highly energy efficient and require no re-lubricating to function properly. Used Pinnacle lifts must be installed by our professionals. A 90-day parts-only warranty is also included in the purchase price.