● Both supply fan and exhaust fan are built inside to bring in fresh air and exhaust out the stale indoor air as well, thus to keep indoor space in natural comfort.
● Built-in heat exchanger (rotary heat exchanger or
plate heat exchanger) transfers energy contained in
the outgoing indoor air to the coming fresh air, thus fresh air is precooled or preheated.
● Various functional sections such as filter section, cooling/heating section, humidifying section etc. can be combined together to meet different air treatment requirements.