i'll be keeping the air vented inside the same room with a window open to let air out. the helicopter comes out 3 or 4 times a month around here. i'm in the UKIf you vent the heat down into your house taking clean air fromoutside they won't see anything but if you vent into you attic space it will make your roof possibility look hotter than your neighbours such could raise suspicion.
if thats the case, would they see my grow op if its in a tent inside of a room with no venting pointed directly to the attic or window?I know in the UK they do actively fly out over towns and cities looking for possible grow houses
so say i had this large tent with the extractor fan taking all of the hot air out.. is it best that the tent isnt directly touching the walls as the fan would be blowing the hot air onto the walls?Oh wait I missread you post I thought you were growing in your attic. I'm dumb, the answer is no they can't with current technology that I'm aware of