Kelson served as the mechanical contractor for the St. Anne’s School conversion project, which transformed a large former residence into a private all-girls school. The building’s new mechanical design provides efficient heating and cooling through an upgraded geothermal system, an air-cooled chiller, a heat recovery chiller, and two boilers. Energy is distributed through a network of piping to more than ten heat pumps located throughout the facility, each delivering localized heating and cooling to adjacent spaces. This extensive renovation required the retrofit of several mechanical rooms, adapting the compact spaces originally designed for residential use to accommodate equipment capable of supporting classroom-level occupancy. Throughout the installation, great care was taken to preserve existing architectural features and work around structural and service elements that were required to remain. Kelson collaborated closely with the owner and consultant team to develop innovative, low-impact solutions that met both performance and heritage preservation goals. The mechanical systems installed included air handling unit (AHU) coils, geothermal piping, heating loops, and a chilled glycol loop, all integrated to ensure efficient operation and long-term reliability.