First bought new in 2005 and used regularly until 2010. Fully maintained and serviced regularly during use period.
In 2010 we purchased a much larger system and this one was then resigned as a backup unit "just in case".
It's probably done no more than 100 hours in the last 15 years. It has been started and maintained when appropriate and still works like new.
We have now just purchased an even bigger one again so this is now surplus to requirements.