Thank you for joining the Intel communities.
If you keep a low temperature and no overclocking the cooler can last a long time.
How long? It is hard to tell, inadequate cooling and heavy overclocking will decrease the relative lifetime.
To avoid any overheating that can damage the unit I suggest to apply new thermal paste after a while of being used, clean the unit from dust, keep the unit up to date with drivers and BIOS.
To be honest is not that simple to tell what will be the lifespan of a unit. It all really depends on your specific unit. Let’s say we have 100 units of Intel® RTS2011LC. Then we would quickly discover that even though they all are the same model, they can be quite different in terms of performance and indeed the lifespan magnitude.
Thanks for your answer !
There was no overclocking so far and also i don't intend to.
Chassis is always clean and no dirt inside chassis or cooler.
I hope it will still work quite some time, cause it's very good cooler !
Thank you for taking your time to post your concern; I hope you can have a good experience with the unit and hopefully it will last a long time.