POWERED BY: The Gruenheim Hydro Vacuum System and Steam Cleaning System. It traps all dust and dirt in your home in water, preventing it from going back into the air. It also freshens the air in your house while we clean with just a few drops of essential oils into the water reservoir. And when we are done, we sterilize everything with the dry steam machine, with temperatures reaching up to 170C, effectively sanitizing, sterilizing and killing viruses, bacteria, and even bed bugs and dust mites.