The exchanger surface, made porous and hygroscopic by some treatments, allows to absorb the humidity. Half the rotor is immersed in the stale air flow which (in winter conditions) yields heat and humidity to the hygroscopic matrix; then, as a consequence of rotation, the fresh air flows in these conducts, recovering both heat and humidity (latent heat).

The two fans are centrifugal type. The rotary exchanger allows, in winter conditions, to recover both the sensible and the latent heat. In summer conditions a part of the humidity contained in the inlet flow is ceded to the expulsion flow, achieving analogous peak efficiency.

Thanks to this high efficiency, the fresh air in winter conditions can be directly introduced in air-conditioned rooms, without installing post-heating sections. The inlet fan is pressing on the heat exchanger, so the air blow-by direction is from the fresh air to the stale air flow.

The drain pan collector is not present because the humidity contained in one of air flows is partially absorbed by the porous surface but then completely transferred to the opposite flow: therefore the humidity condensation is avoided.

With the fans working, it is possible to stop the heat exchanger rotation: so we realize a “virtual bypass”, useful during the between season.

The models of the series CFR-HE+ can be given with a ionization system of the air called BIOXIGEN®.

This system, unique in his type, makes the air and surfsces of the machine, of the ducts and of the bordering rooms healthy and good smelling.