Do you install your PSU facing up or down? whats your choice?

[Tt-Vincent]

When installing PSU's, do you face your PSU's up or down? any reason why? 

[dO_ob]

I tend to face my PSU downwards if there is a dust filter if not i guess facing up?

[Tt Marco]

I usually face PSU down in order to draw cold air from outside of chassis to keep PSU cool down. 

 

The only concern is fan bearing might wear by gravity over time !  How is everyone think ?

[Tt Andy]

I face mine down too, to draw cold air from outside but only if there is a dust filter though. 

[Bacon]

Facing down, since there's a dust filter down there. Also I tend to drop some screws when installing new hardware and I wouldn't want them to fall into the PSU. 

[Dabeavis]

I'll face mine down, probably the only reason I'd face mine up is if the case isn't made for downfacing or MAYBE if the PSU has LEDs (Like the OCZ Fatal1ty 550W that I might get).

[HappyBuddhaman]

PSU's should be face down when at the bottom of the tower, face up when at the top, fan should always draw air in from the outside.