if you went the a/c route you would have to redo your lights ventilation so it wouldnt be pulling from the room and would probably need to use co2 as you would not be ventilating the room to bring in fresh air you would just be ventilating the lights only by installing intake and exhuast tubes on the cool tubes you also wouldnt need the carbon filter installed to just ventilate the lights.
if you didnt go the a/c route you might consider adding additional exhuast fans or larger fan to help reduce temps as one 495 cfm fan really is not big enough for 3 600 watt lights and the incoming air temperature from the intake will have alot to do with the temps in the grow room, per example if your pulling 95 degree air into the room its going to be to hot no matter how many fans you add.
bejay Reviewed by bejay on . help grower seeking advice i´m trying to decide if a 10000 btu air conditioner will bring down the temperatures in the room or try something bigger. The room space is 8x12x7 with 3 600w HPS lamps with cooltube, 8 plants under each lamp. Th strain is NLxBigBud. Thanks in thanks in advance for your help. Rating: 5