The HPH range of unit allow the room air renewal recovering up to the 70% of the exhaust energy, containing the supporting installation system to reach the required temperature in the environment. The use of two sequential heat recovery systems makes the unit particularly efficient making the installation easier both for realisation and management.The RFH range of unit allow the room air renewal recovering up to the 70% of the exhaust energy, they are ideal to integrate the heating and cooling existing installations. Autonomous air-renewal and thermal air treatment units that reconcile air renewal with energy saving.