My first indoor grow with LED:
Procyon100/4 23w cfl
DWC/Aeroponics
Bagseeds
3x3x7 closet

Temp in the closet never really got above 80 this summer. And now with cooler temps rolling in it's been a steady 70 in the closet and all I have is a 6" pc fan in the ceiling for exhaust. There are many LED grow logs on here including mine. And as stated above, virtually no smell either. Gotta love it.