Autonomous reversible air-to-air Rooftop unit for outdoor installation, for the thermo-hygrometric treatment, filtration and air renovation, in medium-small surface and volume environments (shops, bars and service areas). Units have Hermetic rotary scroll compressors in tandem with R410A refrigerant; single refrigerant circuit with electronic lamination valve; aluminium structure and coated galvanized steel base; air treatment section with sandwich panels with external surface made with coated galvanized steel RAL 7035 painted and EC plug fans. The condensing side has an EC axial fan and itâs made with hot galvanized sheet metal painted with polyester powders RAL 7035. According to the selected version, the unit can manage free cooling, with motorized dampers for return, exhaust and fresh air.