LN, I wouldn't have said anything if the battle for the correct temps in my op hadn't made so much difference.

Lucky you with aircon!

I use a dehumidifier to control RH when the temps are too low to trigger the exhaust thermostat (i.e. wintertime, lights off). The dehumidifier makes a bit of heat which brings temps up a little. When the room temp exceeds the thermostat setpoint, whether from lighting heat or from the dehumidifier, the blowers kick on.

You can get humidistats which you can parallel with a thermostat to control the exhaust fan, but if the ambient temp is low and the humidistat kicks the blowers on, it would cool the room below the usually acceptable ranges. I find the dehumidifier helps keep both temp and RH in range.
Al B. Fuct Reviewed by Al B. Fuct 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