That vented air has to come from somewhere. It vents the cooled air from the room, to the outside, drawing air from the rest of the house into the room from the negative pressure it creates. They’re pretty inefficient compared to a dual hose system.
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i’m a little confused as to what that unit is… what is the name brand and model, i’ll look up also but if it blows cold air out the fron and it blows cold air out of one of the flexible duct that need to go in the tent at the bottom somwhere by a flap or make a new hole and duct tape inside and out, then exhaust all of the heat out of the top through multiple or one main 6 inch vent and that needs to go outside also… or in the attic. so the last question is does the ac actually take air from outside and cool it and send it into the room, which would be weird.
Ahh no, perhaps I said wrong? The inlet port on the back is just pulling air in. The exhaust is blowing hot air out, from the AC functioning. My thinking was if its already blowing the hot air from the AC out the window, might as well have the inlet side pull some of the hot air too. I mean, the AC wont care if the air going in is 60 or 100 degrees, its an air conditioner. Saw it as a two birds with one stone kinda thing.
Its definitely an AC. Ot has other functions too. Circulate, fan only, dehumidify, and it has an icon of the sun, but ive never been able to make it put out heat.
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What is the model number of that AC unit?
Im totally confused on how it works, its nothing but my curiosity, but i must understand what im not getting, seeing the manual online will help me 
Why would it blow cooled air outside 
Is that 2nd hose not the intake for the air handler portion of the unit, serving the same purpose as the air intake on the back of mine?
Are you saying the duel hose is more efficient?
I am actually a retired maintenance technician so I have a good understanding of hvac systems and how they work, though my experience is more industrial motor control…
But my unit for example pulls air in the back from the room, removes heat ftom it sending that heat out my one hose with some humidity also, then sending the cooled air back into my room. It’s dehumidifier function can remove alot more moisture from the air but it requires a drain hoes as in actual “dry” mode, it pulls more moisture then the heated air it expels can carry…
A dual hose pulls air from the outside through one hose to blow over the hot coils, and exhausts the hot air back outside through the other hose. The air in the room is recirculated over the cool coils by pulling it in the back of the unit and blowing it out the front.
A single hose pulls air through the back of the unit and splits it, recirculating some through the cold coils and out the front, and some of it over the hot coils and exhausting it outside, creating negative pressure in the room, similiar to say, a range hood, or bathroom exhaust vent would do.
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So there’s units that actually work this way
Guess i learned something new, what are these called so i can look one up?
Just duel hose portable ac or ?
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Yup. Just search Amazon for “dual hose portable ac”.
To be clear, I’m not dissing single hose units, they have their place. Just trying to describe some differences.
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I found them on Amazon, i didn’t know this was available in a portable unit but yeah, some really nice looking units available.
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yes i was down the rabbit hole of the internet to look up that type, you are correct , if it pulls the air in it will cool it and send it out the front of the unit. i know that light is like the sun so it is very hot. it should bake the humidity out by itself almost, Let us know how the temps stay overnight and daytime good luck i’m gone for the night sorry couldn’t send this last night reached my limit for new posters
Oh, its all good. I just switched to HPS today. Temps are like 76 humidity is around 60%. I cant poke my head in at night as to not disturb them, bit id assume a 5-10 degree temp drop and a 10-15% humidity increase, if past numbers are any indicator.
Your humidity is not terrible at all 60 even if you get there is ok for the flower but many fans i live in the dirty south humidity king 93% to 85% and that’s where i start i have a Dehumidity system but i also have to make sure ac is on auto and when high LOTS of damp rid i do that work for 60%