This wind catcher combines a static external louvre and a modulating internal louvre. They work together to vary the opening and free area. Maximum ventilation rates are achieved when the louvres are fully open. Weather resistance is increased when they are partially modulated. Alternatively, they can be closed to prevent the ingress of precipitation.

This wind catcher has a heat recovery system using an integrated counterflow heat exchanger and a robust intelligent control strategy. The adaptive controls sense air quality in real time and switch between modes: natural, mechanical, and heat recovery ventilation. A volume control damper, inlet air filters and datalogging are provided. Integrated solar PV panels run boost ventilation fans.