How well does the thing work; Well, its smaller size makes it suited for spaces up to 1,100 cubic feet, so that rules out using it in that giant outdoor pool youve got. But it works amazingly well for small laundry rooms, basements, attics, and even rvs, boats and antique cars. At the end of a day of 86 fahrenheit and 80% relative humidity, expect to find approximately 8 ounces of water in the water tank. To spare you the hustle of emptying out an overflowing water tank every day, it can hold approximately 16 ounces of dehumidifying action. Peltier module technology. Suitable for room size 9.9m. 0.59 L moisture extracted per day. Visible water level. Auto shut-off. Size H22.22, W13.51, D14.6cm.