Noisey cooling fans

[Mrfish55]

I have an icecap variable speed ( has a temp probe, the hotter it gets the faster the fan goes) expensive but quiet and well built.

[hillegom]

If it is making noise and you are removing the fan, take the sticky decal off of the end and put a drop of oil there. Worked for my computer fan. Still going after a year.
Besides, what is there to lose? not working properly now.

[my2rotties]

Thanks for the info, and I will be trying the oil in the fan. Why spend money if you don't need to...

[bullit67]

Make sure the blades of the fan are clean and not full of dust or salt this can cause an off balance situation and make the fan loud it also makes the fan work harder and causes more air/wind resistance and more noise

Hope this helps