Need an exhaust fan to pull the hot air out and cooler air in. Leds put out heat, just not as much as hps. I have my exhaust running 24/7, and I adjust temperatures accordingly with my home thermostat. Yes I got 4" AC infinity cloudline with the 67 remote so it don't go under speed 4 and can go up to 10 so I'm always 0ulling air put
