{"data":{"id":"us-nyc/n.y.c.-admin.-code-mc-1002","jurisdiction":"us-nyc","citation":"N.Y.C. Admin. Code § MC 1002","heading":"Section MC 1002: Water Heaters","body":"1002.1 General.\n\nPotable water heaters and hot water storage tanks shall be listed and labeled and installed in accordance with the manufacturer's instructions, the New York City Plumbing Code and this code. All water heaters shall be capable of being removed without first removing a permanent portion of the building structure. The potable water connections and relief valves for all water heaters shall conform to the requirements of the New York City Plumbing Code. Domestic electric water heaters shall comply with UL 174 or UL 1453. Commercial electric water heaters shall comply with UL 1453. Oil-fired water heaters shall comply with UL 732. Approval for oil-fired water heaters 350,000 Btu/h input (103 kW) and above shall be obtained from the New York City Department of Environmental Protection. Thermal solar water heaters shall comply with UL 174 or UL 1453, and Chapter 14 of this code. Heat pump water heaters shall comply with UL 174 or UL 1995.\n\n1002.2 Water heaters utilized for space heating.\n\nWater heaters utilized for space heating. Water heaters utilized both to supply potable hot water and provide hot water for space-heating applications shall be listed and labeled for such applications by the manufacturer and shall be built in accordance with Section IV of the ASME Boiler and Pressure Vessel Code with an \"H\" code stamp. Water heaters shall be installed in accordance with the manufacturer's instructions, the ASME Boiler and Pressure Vessel Code and the New York City Plumbing Code. Oil-fired heaters shall comply with UL 732 and shall have an \"HW\" stamp.\n\n1002.2.1 Sizing.\n\nWater heaters utilized for both potable water heating and space-heating applications shall be sized to prevent the space-heating load from diminishing the required potable water-heating capacity.\n\n1002.2.2 Temperature limitation.\n\nWhere a combination potable water-heating and space-heating system requires water for space heating, a temperature actuated mixing valve complying with ASSE 1017 shall be provided to temper the water supplied to the potable hot water distribution system in accordance with Section 607 of the New York City Plumbing Code.\n\n1002.2.3 Cross-connection.\n\nWater heaters utilized for both potable hot water and hot water for space-heating applications shall have separate heating sections and connections for distribution systems and shall not be cross-connected. The potability of the domestic water shall be maintained throughout the system in accordance with the New York City Plumbing Code.\n\n1002.3 Supplemental water-heating devices.\n\nPotable water-heating devices that utilize refrigerant-to-water heat exchangers shall be approved and installed in accordance with the New York City Plumbing Code, the applicable provisions of the New York City Energy Conservation Code and the manufacturer's instructions.","path":["New York City Administrative Code","Title 28","Chapter 8: New York City Mechanical Code"],"source_url":"https://files.amlegal.com/pdffiles/NewYorkCity/Admin/XML.zip","current_through":"Local Law 2026/135 (enacted August 31, 2026)","vintage":"","retrieved_at":"2026-09-06T02:48:57Z","sha256":"dc7a6d78f225c4050363ffeaa464f27aefd329633b9f7217dad2044f6d7b25f9","source_id":"us-nyc","stale":false,"prev":"us-nyc/n.y.c.-admin.-code-mc-1001","next":"us-nyc/n.y.c.-admin.-code-mc-1003"},"notice":"GroundRules: Original legal text. Not legal advice."}