Assuming you are asking about the life expectancy of a chairlift in general, not a specific brand or model, the answer is that it depends on how often the lift is used and how well it is maintained. A chairlift that is used daily will not last as long as one that is only used occasionally, and a chairlift that is not properly maintained will not last as long as one that is regularly serviced. That said, most chairlifts have a lifespan of 20 to 30 years.