If you take a hard fall, a climbing harness may last as little as one climb. If you take care of your harness and only climb a few times each month, your climbing harness could last up to three years. If you only use it for a couple of climbs each year, you might be able to get up to seven years of use out of it. However, never use these numbers arbitrarily. You must always inspect your harness before every climb to determine if it’s still safe to use.