Cleaning the coil of a ductless air conditioner can be done without creating a mess. It just takes a bit of planning and thinking ahead. To clean thoroughly we remove the drain pan from the bottom and the blower wheel to soak them. Then we set up the shower curtain arrangement and use gentle coil chemicals with a good rinse. After the drain pan and blower are soaked they can be cleaned and the whole thing reassembled. You now have a clean air conditioner which is important for the air conditioner and more important, for your lungs.