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Hood air intake temperature question

JSB99

Well-Known Member
Let's say I have a tent in a room that has AC. In the tent I would have 2 x 600w hid lights in 2 connected sealed hoods and I want the air intake to be external to the tent so that I can run co2 and use a second inline fan (this is what the scrubber is connected to as well) to incrementally exhaust used air and bring in fresh cool air from the room.

I would exhaust the hoods outside the home using a 435cfm inline fan, but would it be okay to also provide the air to the hoods from the outside as well? I live in the NW so we only have a couple hot months. During those hot months it resides in the 90s and sometimes gets over 100 degrees. If I'm bringing in air to the hoods at that temperature, is that going to cause any issues with the lights or the tent's ambient temps? Even at 100 degrees it's still much cooler than what the hid lamps would be so I can't imagine it would effect them.

I'm curious about this because the tent will be in room in an air conditioned home and it would be easy to control the environmental temperature if the hoods were isolated from the tent (and the room itself). I wouldn't be sucking the cool air from the home and exhausting it outside, or exhausting the warm air from the hood exhaust inside, making the home AC work harder.

So I guess the question is, can I properly cool a couple of hoods with the intake air above 90 degrees?
 

Jon Galt

Well-Known Member
I tested my exhaust temperature with only one 600 fired up and it was around 71.5. I would assume that 90 degrees would be too hot to properly cool any size lights.
 

NorthernHize

Well-Known Member
I wouldn't try it. If the room is A/C controlled I would just put in a Y fitting so for those couple months you could draw air in from the room, or some such configuration.
 

JSB99

Well-Known Member
Yeah, I didn't really know for sure. My thought was that the hoods wouldn't be cooled down enough and would start heating up the grow area.
Thanks
 
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