As a Electrical Engineer who took Heat Transfer in college 40 years ago, I would have the cooling fan blow cool air into the enclosure IF IT BLEW DIRECTLY ACROSS THE COMPRESSOR. The idea is to get the coolest air to impact the compressor. If the fan does not point toward the compressor, sucking might be better than blowing. (The experimentally minded could try it both ways and leave it in whichever configuration gave the lowest compressor temperature.)

I have my compressor mounted inside a 6'x8' shed, with ductwork pulling outside air (from the cool, North side of the shed) into a fan which blows straight onto the compressor. There have been no problems with this setup in over 15 years.

You can take all that into consideration (especially the 40 years ago part).


"Live like you'll die tomorrow, but manage your grass like you'll live forever."
-S. M. Stirling
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