Dam I feel your pain, hot air in means hot air out.

Monitor the Humidity if you use a swamp cooler but an A/C is what you need, sorry dude. No real quick and easy answer.

I do know of a few who use ICE just under the air inlet and that helps a little but for months at a time that will be a pain in the ass.

For example one medical grower I know has made an ice mold that fits inside his air in duct. He used a 6" inlet but where he put the ice is 10" and then reduced to the 6" to fit his fan. There is a 6" hole in the middle of the 10" x 5" block of ice as to not restrict the air flow but cool it. He only deals with extreme heat for about 2 weeks a year. Just an FYI.
Zandor Reviewed by Zandor on . Need Help with HEAT. Where i live is very hot during the summer. I mean really hot, like 120F. for a month hot. When it is this hot, my house is about 85F inside. Now I have a 5'X5' grow room, with a 400 wat HPS and 6 42 wat cfls, and a t-15 tube light, with good venting, but if I am pumping in air at 85F, how do I keep it below 85F with out killing my wallet? I saw a small swamp cooler at Lowes for $250. this would help also with the humidity, it goes at about 30%. Any ideas on a way to keep this room cool with Rating: 5