Q:

How do I know when to retire a climbing harness?

I've only been climbing a few months.  I bought a harness and have been using it.  I know they don't last forever.
How do I know when to stop using it and buy a new one?
(How should I check climbing equipment to tell whether it is still safe to use? doesn't talk about harnesses)

A:

When it's beyond the lifetime recommended by the manufacturer.
When you see abrasion or damage that is more than superficial on any of the load-bearing components. This means you have to inspect your harness regularly.
When it has been in contact with a number of strongly corrosive substances.
When there is discoloration (indicates excessive exposure to sunlight, which can weaken Nylon).

Here's an article that goes into some more detail: https://www.backcountry.com/explore/when-to-replace-your-rock-climbing-harness

