Applied Custom Equipment is a premier manufacturers' representative firm that specializes exclusively in the design, engineering, coordination and sales of custom HVAC equipment. Applied Custom Equipment takes pride partnering with consultants, contractors, architects and owners in Illinois, Southern Wisconsin and Northwest Indiana to find the right solutions for all their HVAC equipment needs. With a diverse product offering, from small Direct and Indirect-fired Gas equipment to large Custom Packaged DX and Custom Air Handling units, we have the equipment to engineer the best solutions.