National Football League | National Register of Historic Places | National Hockey League | England national football team | National Basketball Association | National Science Foundation | National Geographic | National Trust | National Endowment for the Arts | National Geographic Society | Argentina national football team | National Trust for Places of Historic Interest or Natural Beauty | National Park Service | National League | Australian National University | National Guard | National Geographic Channel | Green Day | National Institutes of Health | Green Party | National Guard of the United States | National Collegiate Athletic Association | United States National Research Council | National Portrait Gallery | National Academy of Sciences | Indian National Congress | United States men's national soccer team | National Research Council | Royal National Theatre | National Gallery of Art |
Central vacuum installations can earn points for Leadership in Energy and Environmental Design (LEED) home certification, Health House certification by the American Lung Association, or the National Green Building Standard of the National Association of Homebuilders (NAHB).