i live in a 4br ehh about 2200sqft home with an upstairs, downstairs, and a basement (basement not incl in sq. footage) the basement is my choice of operation. i work from home so someone is here pretty much 24/7 or close to it. as stated before i have 4x600's, 2T5. (1small and 1 big) 2 6' cfm's for exhaust an ac unit (not using at the moment, pulling in fresh air as temps are droppin here) w a 4' inline. i have 2 16inch osc fans 1 10inch and 2 small 6inch fans as well. that with my pump, 48 site cloner, some airstones pretty much covers my setup.u need to tell us a lot more info. If u have a 5br house you will raise a lot less suspicion running 6k watts through than say a 1 br apt. Like a large pool heater uses more energy than a MASSIVE grow, its all about the specifics. I live in a 2 br apartment, 6k watts would def raise a red flag, but a large house, 6k is nothing. Just my 2cents