It doesnt matter where you grow room is. Every video I've seen on Infered and Flir cameras always shows the heat coming from the vented lights. The videos are on here somewhere. One showed the roof of a house. You could clearly see the heat coming from one of the vents on the roof. So just becareful where you vent your lights.
great tip, man. thanks. I'll only worry about this if my state goes legal and i'm carded (vote soon!!!), but I'd still not want to draw attention, even if legal.