For many elderly and/or disabled individuals, the stairway that always was such a breeze may could suddenly become a major obstacle in everyday life. As a result, these people have to spend most of their time confined to the lower levels of their homes, with the upper levels practically out of bounds. According to research performed by the University of California's Disability Statistics Center, more than 60% of America's 1.6 million wheelchair-bound people face day-to-day difficulties in getting around their homes. Often times, the relatives of these people will simply recommend solving the problem by 'relocating to a bungalow or nursery'. However, the logistical and emotional effects of moving one's residence are often grossly underestimated. To those affected, having to leave one's house will often feel like yielding, which could in the longer term lead to depression and a general sense of failure. However, modern technology provides an answer: a stair lift.

A stair lift, sometimes also referred to as a 'chair lift', is made up of a high-grade durable wall-mounted rail with a durable and comfortable chair attached. This chair slides up and down the rail through a rack-and-pinion system, transporting the seated person up and down the stairs with very little effort. The device was originally invented by C.C. Crispen during a high incidence of polio in the 1920s, to help his wheel chair using friend tackle the stairs of his house. Recently, the device then known as the 'inclin-ator' has underwent rapid development. Modern stair lifts come in a wide variety of models, able to tackle both straight stairways and stairways with a curvature. Also, there are models for use outside and models which feature a large platform on which one can securely park a wheelchair.

If mobility issues start limiting your life to the lower levels of your house, you may want to think about buying a stair lift. In these days, stair lifts no longer have to be those bland industrial-like machines that don't really fit with the interior of your home. You will find that there is an immense variety of seat models and coverings available, to make sure your stair lift fits neatly into the trusted interior of your house. As for power, stair lifts exist in both AC (alternating current) and DC (direct current) varieties. AC-powered lifts are connected directly to the mains power supply, while DC-powered lifts use special rechargeable battery packs. DC-powered lifts are usually more expensive, but they have several important advantages. The most important advantage of a DC-powered lift over an AC-powered one is safety; in case of a power cut, a DC-powered lift will continue to operate. You should be aware of the fact that short-circuiting is an exceedingly common cause of fire; in such a case, an AC-powered lift will not be able to transport you down to safety. When purchasing a stair lift, don't forget to take the following factors into consideration:

- Method of control: a joystick-control is generally regarded as more convenient than a button control. Especially people suffering from arthritis.

- The glide-factor: This will determine the overall smoothness of the ride.

- Power: a DC powered version offers more safety and a generally smoother experience.

- A swivel chair will allow you to exit and enter the lift without taking awkward steps.

Looking at the cost, a stair lift is not likely to be be a light investment. However, because of recent price drops, prices have fallen into a range that is acceptable to most people with a standard income. In the end, the cost will mostly be determined by your personal needs, as well as the design of your staircase. Curved stair lifts are custom-made and may therefore be significantly more expensive in both manufacture and installation. For those that are not able pay up front or only suffer from temporary disability, stair lifts are also available for rent. You can also consult your retailer for a special financing plan. Always consult a local retailer and have your home evaluated before buying a stair lift.