The Hill Group ventilation services are engineering oriented, so we know how to address the construction needs of today’s clients who expect both quality and value. Our firm excels in all phases of sheet metal and air system construction by leveraging the latest technology for efficiency and uniform high quality. That is why we have been consistently ranked among the largest specialty contractors in the Midwest. For more than 60 years the firm has successfully completed high rise, industrial, institutional, commercial and multi-family projects.