Well got it hooked up and used it a few times and all I can say is WOW. Talk about a steamer on steroids. I'm waiting for a real dirty car to do a review. I just got a 4 prong 20 amp receptacle with a locking 4 prong 220v 20 amp plug. Hooked up the X, Y, and ground and left the W because there is only 3 wires. I lucked out because my electric panel is right on the other side of a wall of my garage. So I didn't have to pull wires anywhere. Only thing is I had to make my own 20 foot extention so I could get it outside of the garage to do engines. The hot water/detergent injection is pretty awesome also but I haven't used it much yet. I need to buy the upholstery extraction tool because when I ordered it originally they were out of stock. I guess I won't need to buy a extractor now.