The first-level metal or one-time M-level filter, which filters large particles of grease and cooking smoke particles. One or more levels of ESP (Electrostatic Precipitator) can operate with high efficiency. Depending on the concentration of cooking fumes and the type of cuisine, ESP can induce static charges on the particles passing through it, and then collect them on the collecting plate generating a magnetic field. ESP is very effective for fine particles (including grease particles), and can be reused after cleaning. BRETON Breton UV-C technology. This technology can photolyze and oxidize cooking fumes and reduce the odor emitted to the outside. Heat recovery device, through the dual action of ESP and BRETON, the coil fins of the heat recovery module have no grease deposits, which helps maintain a constant recovery effect over time and significantly limits its maintenance and cleaning costs. The heat recovery also means reducing the temperature of the gas at the outlet. The hot water recovered by the coil can be used for dishwashers or to preheat domestic hot water. Some odors are carried by grease particles, water vapor, and smoke. They are completely removed by the previous filtration steps. The remaining odors, especially VOCs, can be effectively removed through a combination of activated carbon and chemical particles. The first method removes gases through adsorption. The activated carbon filter also adsorbs the excess ozone produced by UV-C. The second method significantly reduces the odor through adsorption, absorption, and chemical reactions. Optional fan module, considering the urgent need for fan maintenance, users can choose the appropriate fan based on the parameters provided by PSE. Optional noise reduction module, which can effectively reduce the noise in the exhaust duct and outlet, meeting different commercial environments. EMS variable frequency energy-saving module, based on the needs of cooking and exhaust air, intelligent frequency control, saves energy and reduces operating costs. Advanced control module, equipped with an IoT (Internet of Things) platform, can automatically evaluate the device, replace specific filters as needed based on monitoring requirements, has advanced 24/7 remote monitoring functions to ensure normal operation.