I looked at one of them humidifiers lastn week but was uming and aring whether to get it I didn't lol but I m sure gona return and get it this weekend and order that 600w on Tuesday.. As far as exhaust and intake I don't want to cos I don't have a tent or grow box to start cutting holes and that so I'm gona leave it keep opening the door and get a tent in the not so far distant future. My room gets to 35 -40 degrees celcius is that too high?