My portable ac units are setup with 1 vent hose which goes out a window or tapped into an exhaust of some sort. Now on the front of all mine and those I have seen you have the intake fan down low behind the gratting where this takes air in. Now above that is usually the area the cold air comes out. This is where you make the cover with a vent attachment and hook the vent house to it. I am assuming you have a small grow box if I read right not big enough to put the entire unit in the grow box? Your thermostat wont be real accurate like this you are correct. What you need to do is see is how long it takes the box to cool when the ac is running and then use a simple cycle timer from like walmart and set the unit to turn on in intervals such as ok if I run it 10 minutes it cools the box and that lasts an hour before temps up again or if its flower use only during lights on. You ll have to do some tinkering to figure out your needs. maybe you only need it to kick on during the days hottest hours so set the timer for those times. Just set your temp on the ac to what you want to cool the box to during that time....Small boxes are difficult but this can make it happen. You can also just tap into your home vent duct and run a line to the box and then the box will be the temp of your home
This sounds simple enough... This is actually what I had in mind but I didn't realize the heat extraction point was different from the cool air output point. I figured once the unit was done blowing cool air it would suck hot air through the same vent. But now that I think about it that makes no sense..
![Red Eye :eyesmoke: :eyesmoke:](/styles/smilies/redeyesmoke.gif)
I'm sure after a week or so I could easily have it dialed in so I don't have to touch it again.
Thanks for the input and quick responses, love this forum.... like I said though, winter is about here so I won't even have to worry about all this for another 6 months or so... Just planning ahead.
Side question if anyone is bored enough to read and answer : I have a 400w but I want to upgrade to 600 or 1000... If I went vertical, with either of those lights, how would you set the room up ?
I.E... 12 plants surrounding the light vegged to say 12" to finnish at 24-28" ?
24 plants surrounding light vegged to 6-8"
Or maybe even 40 plants surrounding light with little to no veg ?
Also thought about a simple half stadium (tiers only go up on two sides, not all 4 sides) and doing a s.o.g. with enough plants to fill the space...
I've done horizontal grows forever now and I'm just not getting the yields I want (mostly my fault with room conditions). But I'm ready to step up my game and see what I can pull.