How the Empire State Building Is Pioneering the Future of Energy Efficiency
The Empire State Building's Exterior In all, the Empire State Building contains more than 6,500 windows, almost all of which have a radiator unit installed directly underneath. Most of the double-pane glass was well more than a decade old, and all that carved exterior "stonework" beneath each window is actually aluminum installed to reduce the cost of expensive masonry when the building was constructed in 1931. That's right: the radiator units are separated from wintry outdoor conditions by conductive aluminum. John MahoneyGreening the world's most iconic skyscraper The Empire State Building, arguably the world's most famous office tower, is 1,472 vertical feet of historic American real estate. It also contains 2.8 million square feet of office space, constructed to the energy efficiency standards of the early 1930s. So when Anthony Malkin took over management of the building several years ago, he also inherited an $11 million annual energy bill and a...