The air flow carries hydrogen peroxide so that its disinfectant action is effective on duct surfaces, in the ambient air and on the surfaces of the treated rooms.

The PCO™ technology of Dust Free modules exploits the combined action of the rays of a special UV lamp with a catalytic structure composed of a honeycomb-shaped metal alloy, mainly composed of TiO2 (titanium dioxide) and other noble metals in lesser quantities.

Air laden with humidity (H₂O) passes through the Dust Free module made of penta metal alloy. Through the action of a high-intensity UV lamp, a photochemical oxidation reaction is initiated, binding an additional oxygen molecule to H₂O. Hydrogen peroxide (H₂O₂) is released into the ambient air, providing safe, effective and, above all, complete disinfection.