Single and double bank air washers with respectively a maximum of 75% and 95% saturation efficiency (at 500 fpm, 30 psig) are provided. Water heaters. piping and nozzles material are poly propylene. Plastic mist eliminator and inlet louver are included in chamber. Full cast iron water sump pumps are placed inside the air washer chamber. making it compact and easy to install. The unit is equipped with floater and a water level control switch; prevent the burning out of sump pumps. Casing is constructed with 1 or 2 inches polyurethane double skin panels. To protect the water sump pump against corrosion, glass fiber coating is available upon request.