Portable AC venting

Gentlemencorpse

Well-Known Member
Hey all!

Anyone have experience venting a floor AC unit more than the recommended distance? I need to cool my grow room down now that there's a second tent in there. I can get a used floor AC for short money, but the nearest window I can vent out of is 15' away.

I can't really afford a ductless system right now unfortunately.
 

Gentlemencorpse

Well-Known Member
It’s hard to understand the full situation and how you’re trying to set up
Good point.

I grow in a tiny 7x7 storage room in my basement. I used to have just one 32x32 tent in there with a 315 CMH and it was fine even on the hottest days. But now I added a second tent, a 2x4 with some LEDs, and it's raised my temps in the CMH tent into the low 90s on hot days. I just want to cool the whole little room off a bit to drop the ambient temps so my intakes can pull cooler air in.

So I was thinking of using a floor AC unit. But the nearest window I can vent the hot air out of it is actually in the next room over, about 15' away. I can easily run the ducting that far, but I wasn't sure if it would cause problems for the AC unit. I don't want to try to cool the whole basement, and I also don't want to just pump the hot air into the room next to it unless I have absolutely no other choices.
 

Nizza

Well-Known Member
Good point.

I grow in a tiny 7x7 storage room in my basement. I used to have just one 32x32 tent in there with a 315 CMH and it was fine even on the hottest days. But now I added a second tent, a 2x4 with some LEDs, and it's raised my temps in the CMH tent into the low 90s on hot days. I just want to cool the whole little room off a bit to drop the ambient temps so my intakes can pull cooler air in.

So I was thinking of using a floor AC unit. But the nearest window I can vent the hot air out of it is actually in the next room over, about 15' away. I can easily run the ducting that far, but I wasn't sure if it would cause problems for the AC unit. I don't want to try to cool the whole basement, and I also don't want to just pump the hot air into the room next to it unless I have absolutely no other choices.
have you tried venting the tents into the rest of the basement first? I would try venting the tents into the rest of the basement. If the basement heats up and it is still a problem, you can just use the portable AC in the large side of the basement. As long as the 7x7 storage room is exchanging air to and from the basement it will work

I wouldn't go over the recommended footage for that portable AC unit because the condensation that is in the air would most likely drop back down the exhaust tube and into your grow, and also it would lose you efficiency.

The solution would be to put your intake from one tent, on one side of the 7x7 pulling through the walls to the rest of the basement, and then have your exhaust fan dump the air out the opposite side of the 7x7 area into the rest of the basement. try to get as much seperation between the intake and exhaust as you can and you'll be all set
 

Gentlemencorpse

Well-Known Member
have you tried venting the tents into the rest of the basement first? I would try venting the tents into the rest of the basement. If the basement heats up and it is still a problem, you can just use the portable AC in the large side of the basement. As long as the 7x7 storage room is exchanging air to and from the basement it will work

I wouldn't go over the recommended footage for that portable AC unit because the condensation that is in the air would most likely drop back down the exhaust tube and into your grow, and also it would lose you efficiency.

The solution would be to put your intake from one tent, on one side of the 7x7 pulling through the walls to the rest of the basement, and then have your exhaust fan dump the air out the opposite side of the 7x7 area into the rest of the basement. try to get as much seperation between the intake and exhaust as you can and you'll be all set
That's a good call, and I have everything I need here already. I'm going to get that setup tonight!
 

Gemtree

Well-Known Member
You could get a little duct booster from home depot that would probably make up the difference
 

Harvest76

Well-Known Member
Hey all!

Anyone have experience venting a floor AC unit more than the recommended distance? I need to cool my grow room down now that there's a second tent in there. I can get a used floor AC for short money, but the nearest window I can vent out of is 15' away.

I can't really afford a ductless system right now unfortunately.
I cant imagine it being a problem, the fan in those is pretty powerful. 15 feet isnt that far.
 
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