Full service commercial, institutional, and industrial HVAC contractor based in Little Canada, MN. Northern Air Corporation (NAC) specializes in service, design, construction and automation of heating, ventilation and air conditioning systems, emphasizing cost efficiency, optimum indoor environments and HVAC total building solutions.

Specializing in ADA property compliance inspections, providing building plan review, legal support, and expert witness services. Handicapped and disability access consulting services including Americans with Disabilities Act compliance surveys, expert witness services and plan check. We provide cost effective ADA accessibility consulting for legal, real estate and the disabled community.