DOE Study Shows Window Retrofit System Slashes Energy use at Northeastern Mid-rise

Energy Savings in 40-Year-Old Landmark Exceeding Pre-Renovation ProjectionsPedricktown, N.J., February 27, 2012 – 400 Market Street, a 12-story building in Philadelphia with a revolutionary window retrofit system, was selected to be part of a U.S. Department of Energy (DOE) project as a blueprint for turning drafty old buildings with single pane windows into national models of energy efficiency.  After just a few months of testing, it is becoming increasingly clear that the agency’s choice was a good one. Built in 1972, 400 Market Street is a 200,000-square-foot mid-rise that fits the