Mini splits are really the only way to go. Portables and windows will leak out co2. I have a dual hose portable that still leaks some out. But if you have the money and you want to do it right, go with a mini split. You can get a top of the line 24k mini for like 1300 bucks shipped. That can cool 4k bare bulbs easy. My room is 10x12x10. 20lb tank lasts me a week. ^^This guy is prob in AZ too.. right now it's perfect out for growin and warmin up. I haven't even been runnin co2 or AC.. I've been just venting with an 8 in fan and my room has been runnin 71-74 lights on.