Yes, it still plugs in. You basically take the coils that get cold that the air is blown over to make the air cold, and bend them out and down so you can submerge them in water. ck out this thread I did earlier this year: http://www.420magazine.com/forums/cabinet-closet-grow-room-setup/97027-diy-water-cooled-light-chiller-rez-300-00-a.html