When ramps are not possible wheelchair lifts come into the scene. Where the height is more, a ramp is not possible.
A variety of models of lifts are available in the market. So before buying one make a careful research taking into considerations your needs, cost durability and service. Basically two technologies are used to make wheelchair lifts.
Hydraulic lifts are comfortable. Since fluid is used in the operation Sudden stoppages do not result in shock or jerks. But hydraulic lifts are expensive and requires frequent maintenance.
Electric lifts work on electricity with battery back-up for sudden power failures. Electric lifts are cheaper than hydraulic lifts and require little maintenance.