TY - RPRT TI - Hydronic Shell: An Affordable Solution for Multifamily Deep Energy Retrofit AU - Kunwar, Niraj [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000263457652) AU - Im, Piljae [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000295242402) AU - Shrestha, Som [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000183993797) AU - Safir, Islam [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] AU - Goldstein, David [Hydronic Shell Technologies, New York, NY (United States)] PY - 2025 DO - 10.2172/2573443 UR - https://www.osti.gov/biblio/2573443 ID - 2573443 ER -