Air intake filters help keep out any crud from going inside the compressor. Just like a car engine, (which is really just a big air pump), air compressors live longer when they are fed clean, dry air, and are housed in a well ventilated and cool environment. Yes, you won't see as much crud as a car engine, but there is still dust and bugs that go inside the cabinet.

Cool in pond aeration is as close to ambient temp as possible. That is why there are fans placed in cabinets to draw in and circulate outside air - to get rid of the warmer air that is inside the cabinets.


www.hoosierpondpros.com

[Linked Image from lh6.ggpht.com]
http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).