Originally built in 1925 in the Bronx, New York, the City University of New York (CUNY) Hostos Community College is a six-story, 89,610-square-foot facility that includes a variety of academic spaces. The building has faced significant architectural and mechanical challenges since 1972. The nine package units, equipped with electric heating coils and direct expansion (DX) cooling coils, were over 18 years old and frequently required repairs due to surpassing their useful life cycle.