The Helios Fans KWL-ET 200/300 is an enthalpy heat exchanger designed specifically for use with the KWL EC 200 and EC 300 ventilation units. It enables both heat and moisture recovery, contributing to a stable and comfortable indoor climate throughout the year. By maintaining optimal humidity levels and reducing energy consumption, this component supports a hygienic and energy-efficient ventilation system. Ideal for residential and small commercial applications, it enhances air quality and ensures occupant comfort in every season