Ventilation, exhaust, and purification systems are essential for catering establishments due to the presence of apparatus emitting hot air, gas mixtures, tars, soot, dust, and other particles. Simple ventilation is inadequate. Industrial gas cleansing apparatus is often bulky and costly to manufacture, install, and maintain, especially for small enterprises without a direct roof route for combustion products. Torch-Air PCU spark arresting and gas cleansing systems offer a solution with advanced technology and industry standards. They have a lower pressure drop, saving ventilation power, and their Pollution Control Unit technology is consumable-free. Any employee can maintain the restaurant exhaust hood scrubber, significantly reducing maintenance costs.