i have some CFLs and i mean now that i have my closet closed up tight as i can get it i see more of a heat difference and thats with a fan running all the time, but normally there isn't much heat made off of them from what i've seen

GG23
GrowinGreen23 Reviewed by GrowinGreen23 on . the CFL Odor Ionizer Bulbs Work ! OK ... I just received two of the 23-watt CFL Air Purifiers ... 23-watt draw, 100-watt equivalent, red spectrum ... built-in ionizer, ... I put both into my 2'x4'x8' cabinet, and yes, they DO work ... I have four plants in veg right now, going into flower in another week or so, (3 plants are NYCdiesel and SAGE, stinky) and these lights definitely work ... BUT, these are my first CFL lamps, and I was surprised at the heat output ... I have an extremely accurate infrared thermometer, and surface Rating: 5