Connect with Top-Rated HVAC Contractors in Grayslake!

Located in the heart of Lake County, Northern Air Systems, Inc. has been providing top-quality HVAC services to the residents and businesses of Chicagoland since 1984. We specialize in installing, maintaining, and repairing residential, light commercial, and industrial forced air heating and cooling equipment, as well as offering services for hot water and infloor radiant systems. Our skilled technicians are factory trained, and we use only the finest products to ensure your satisfaction and comfort 24/7.