| − | In some cases, a cyclic refrigeration system is used without a full separation of sides. Although this does not cool any large area, it still creates a small cold area within the system, in which humidity will condense out. Since there is some waste in every system, this setup as a whole produces heat, but it also removes some moisture from the air. | + | In some cases, a cyclic refrigeration system is used without a full separation of sides. Although this does not cool any large area, it still creates a small cold area within the system, in which humidity will condense out. Since there is some waste in every system, this setup as a whole produces heat, but it also removes some moisture from the air. Such systems are sold commercially as dehumidifiers, for use when humidity is higher than desired but a temperature increase in not a problem. |