Cost effectiveness and super efficient performance are the principle features found in the American ALDES Ventergy® Series ENERGY STAR rated fans. American ALDES offers a broader selection of ENERGY STAR rated fan configurations than any other manufacturer. We manufacture; inline exhaust, multi-port exhaust, distributing supply, filtering supply, and blending filtering supply ventilators. American ALDES also provides a broad range of commercial application fans including; rooftop, exterior wall mounted, and multi-port fans for apartment buildings.