How Long Do Cpu Fans Last. Last time I cleaned the PC I noticed a lot of dust on the fan blades figured that would be the reason for the noise but it isnt. I have a macbook air that kicks in the fans all the time and it is a 7 year old machine.

As long as you take care of your AIO cooler it will last a good 5 to 7 years. My 212 fan was actually really quiet at first but that only lasted about a week or so. 2 Dec 3 2006.
To keep this part in good working condition the coolant should be changed every 25000 to 40000 miles.
Depends on the laptop and fan. Of course there are other failure points such as the chip packaging wires and things of that nature but low decades would be a fair assumption. Non-reference GPU coolers often attempt to improve on reference coolers by placing a lot of emphasis onto fans engineered for increased performance silence efficiency reliability and longevity. If you look at those high quality ball bearing fans made by Orion or Panasonic they are usually rated for around 60-100k hours at a certain temperature.
