Infrared imagers cannot see inside your house. Don't believe what anyone else here might say about them being able to. Helicopters use FLIR. FLIR stands for Forward Looking Infra Red. Infrared sensors work by creating an image based on returned thermal signatures from whatever the infrared beams are looking at. The only thing they can "see" is what they can hit. Infrared beams cannot penetrate walls, clothing, a piece of notebook paper for that matter. HOWEVER, if you're running 10x 1kw's, the heat from them has to be going somewhere. whether it's your attic, a vent pipe to the outside, or, god forbid, you let it stay in the grow room, then the heat will cause everything around it to warm up. If a cop chopper with FLIR looks at that house, the heat buildup will cause the walls in that room to be warmer than the rest of the house, which will in turn, show an image on his screen that makes that room look alot brighter than the rest of the house. If the hot air is coming out of a vent pipe or something, it will look like a bright white fountain pouring out. So no, thermal imagers cannot see inside your house, but they can see other tell tale heat signatures from your grow. But if you're only running one or two lights and keeping everthing cool, they wouldn't be able to see it. So your kinda right and wrong. Hope this helps.