The AquaHeat heat unit of the Arctic DP-520 type, is the starting model of the entire AquaHeat Arctic series. The excellent performance of this type is the quality basis of all other Arctic models. In principle, all AquaHeat heat units have the same objectives: Registering purchased energy The AquaHeat heat units are used in new construction and renovation projects, which are connected to a central heat distribution network per complex, block or district. Some specific characteristics are: