An in-depth case study of the deep energy retrofit of New York University’s Rubin Hall student residence to EnerPHit certification standards. Originally constructed as a hotel in 1926, the 17-story Greenwich Village Historic District building now houses 700 students and faculty. From historic facade restoration to systems upgrades and the rigor of EnerPHit criteria, it’s a model for renovating billions of square feet of pre-war masonry construction in New York…