Rotary heat exchangers offer high efficiency in a compact design and often provide the best return on investment. The Semco wheel is designed for heating and cooling recovery. Better energy recovery during summer The main feature of the Semco wheel is that it can not only transfer heat energy but also moisture. When warm outdoor air is cooled, the moisture in the air condenses to water when the air reaches the dew point. This takes a lot of energy and requires that the chiller is designed to cope with it. The Semco wheel will help with that by transferring a large part of the moisture in the outdoor air and exhausting it directly through the exhaust fan. This means the size of the cooling system is reduced.