fan blowing or sucking

[lankor]

how can we see that the fan is blowing or sucking?

i will assumed that the fan is blowing clockwise.

if the front(usually with a sticked liked evercool or papst) is facing the user, does it means the other end is blowing, and it is sucking from the user to the other end

-real hard to explain with words.

The prob is i got a zalman flower, i do not know which side of the fan should be facing the heatsink.

Yeah...i am pretty dumb

 

[Strych9]

Usually blowing out toward the side with the label. Plug it in and feel which way it's blowing.

 

[ledzepp98]

you can plug it in to se which way it is blowing... but most (if not all) fans have 2 little raised arrows on one of the sides (on the depth side) that show which way the blades turn and which way the air flows.