The hygroscopic surface helps the rotary heat exchanger to transmit humidity. The exchanger is usually used in comfort ventilation systems to guarantee humidity transmission, even in the transition period.

At a glance


The Hoval Emån rotary heat exchanger is generally used for comfort ventilation systems. It transmits humidity, even in the transition period. Higher air humidity improves the indoor climate. The hygroscopic surface helps with humidity transmission.



Hoval energy recovery systems are independently tested time and time again (for example, at the building technology testing laboratory of the University of Lucerne). All technical data is based on these measurements. This means that this is reliable data for planners, installers and operators. You ...