Our dehumidifiers operate according to the Peltier effect by thermal exchange or by using a compressor. In the Peltier effect, air circulates between two conductive plates of different material. One is hot and the other is cold. The Peltier effect creates an important differential of temperature between the two metal plates, which creates condensation on the coldest side. Once turned into water, it is collected in the dehumidifier tank. A dehumidifier by compressor sucks air towards a very low temperature condenser. Air steam is instantly turned into water.