Lighting fan.... push or pull

[colorockman]

getting my grow room set up and wondering, do I pull the hot air through the system or should I put the fan on intake side and push the air through... I have heard differing responses on this, so would like to know others input on this subject.......

[tlranger]

Put in both, use what you need when temps require.

[Shovelhandle]

Pushing it is better for the fan motor if it's integrated with the ducting.

[colorockman]

well I set it up to pull, that's what I saw in a set up vid... did a test run and holding at 75 deg in room, so temps are not a prob. But that's what I was wondering, would the heat coming through on the outtake effect the fan motor. just a few screws and zip ties to play with and I can move it to the intake......

[Shovelhandle]

supposedly the fan motor should work for a good while either way but all things being the equal, the cooler a motor runs the better.

[Chromophore]

One problem with pushing is that if your system has leaks, you're pushing air back into the room. When I had mine set to push, my room temps averaged 5 degrees hotter than when I pull. Most of my leaking was coming from the light enclosure.