they would need a significant amount of evidence to search your app. The would pretty much need first hand evidence its there, Paper trails don't provide warrants nor do people claiming that its there if they knew. However, if u got caught selling or with bud, and they had that kinda stuff on hand they would probably be able to come up with a warrant. Don't worry about heat, they cant do nothing about it, u cant possibly be running enough electricity to raise a flag, and seal up ur box, NO LIGHT should leave it, and u need to cover the windows up if u open the box