Roof-Top autonomous air-condensed conditioner with structure in powder-painted galvanised sheet metal and 50 mm panels insulated with polyurethane. Configurations: recirculation only, recirculation+renewal up to 30%, recirculation+renewal+expulsion and thermodynamic recovery, total/partial free-cooling. Cooling circuit with scroll compressor, standard pre-painted Cu-Al and Cu-Al thermal heat exchange coils (or Cu-Cu Sn upon request). Standard or high-head plug fans on inner side, with EC motor and differential alarm pressure switch. AC axial fans on outer side, with EC motor and optional pressostatic rpm control device. G4 filters fitted as standard on delivery and intake, if present; upon request, F7 filters or H10 electrostatic filters (on delivery only). Electronic controller. Accessories: CO2 and/or VOC probes, water and electric heating coils, gas burner module, humidification/dehumidification control, etc.