There is no doubt that having a stair lift in your home can dramatically improve your quality of life. If you are starting to find that climbing the stairs is becoming a hazardous experience, or just hard work, then a stair lift could be the answer. Another solution could be to move to a single storey residence. However, this can be expensive and stressful, and many people are reluctant to leave a house that they have spent many years turning into a home.
Once you start considering the possibility of having a stair lift, you begin to delve into what can be a highly technical area. However sure you are of what you want, I strongly recommend that you take professional advice from someone with experience in this field. In most areas, informed advice is available from community occupational therapists (OT's). You will also need to make contact with a company who specialises in installing stair lifts. I would advise that you contact more than one company because there can be a huge difference in price and quality. Unfortunately, as the populations average age increases, more and more unscrupulous traders have entered the market and you need to make sure that you are not being ripped off.
If possible visit a demonstration centre and try a stair lift yourself. A stair lift is not the answer for everyone. For example, if you are confined to a wheelchair, then a lift that goes through the floor would probably be the best option.
The technology involved in stair lifts has improved dramatically in recent years. A stair lift can be installed on 99% of stair cases these days. But remember, not all stair lift companies are equal, some are using technology that is several years old. My advice is to research as many products as you can and to get as many quotations as you can. Knowledge is power after all, and with a few sensible precautions before purchase, you can ensure that you buy the right lift for your needs for the right price.