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New York City · Through Local Law 2026/135 (enacted August 31, 2026)

N.Y.C. Admin. Code § MC 301: Section MC 301: General

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Where this section sits in the code
  1. New York City Administrative Code
  2. Title 28
  3. Chapter 8: New York City Mechanical Code

301.1 Scope.

This chapter shall govern the approval and installation of all equipment and appliances that comprise parts of the building mechanical systems regulated by this code in accordance with Section 101.2.

301.2 Energy utilization.

Heating, ventilating, air-conditioning, and refrigeration systems of all structures shall be designed and installed for efficient utilization of energy in accordance with the New York City Energy Conservation Code.

301.3 Identification.

All pipe and tubing and each pipe fitting utilized in a mechanical system shall bear the identification of the manufacturer.

301.4 Plastic pipe, fittings and components.

Plastic pipe, fittings and components shall be third-party certified.

301.5 Third-party testing and certification.

Piping, tubing and fittings shall comply with the applicable referenced standards, specifications and performance criteria of this code and shall be identified in accordance with Section 301.3. Piping, tubing and fittings shall either be tested by an approved third-party testing agency or certified by an approved third-party certification agency.

301.6 Fuel gas appliances and equipment.

The approval and installation of fuel gas distribution piping and equipment, fuel gas-fired appliances and fuel gas-fired appliance venting systems shall be in accordance with the New York City Fuel Gas Code.

301.7 Listed and labeled.

Appliances regulated by this code shall be listed and labeled for the application in which they are installed.

Exception: Listing and labeling of equipment and appliances used for refrigeration shall be in accordance with Section 1101.2.

301.8 Testing of materials.

Refer to Section 28-113 of the Administrative Code.

301.9 Label information.

A permanent factory-applied name-plate(s) shall be affixed to appliances on which shall appear in legible lettering, the manufacturer's name or trademark, the model number, serial number and the seal or mark of the approved agency. A label shall also include the following:

1. Electrical equipment and appliances: Electrical rating in volts, amperes and motor phase; identification of individual electrical components in volts, amperes or watts, motor phase; Btu/h (W) output; and required clearances.

2. Absorption units: Hourly rating in Btu/h (W); minimum hourly rating for units having step or automatic modulating controls; type of fuel; type of refrigerant; cooling capacity in Btu/h (W); and required clearances.

3. Fuel-burning units: Hourly rating in Btu/h (W); type of fuel approved for use with the appliance; and required clearances.

4. Electric rating in volts, amperes and phase; Btu/h (W) output rating; individual marking for each electrical component in amperes or watts, volts and phase; and required clearances from combustibles.

301.10 Electrical.

Electrical wiring, controls and connections to equipment and appliances regulated by this code shall be in accordance with the New York City Electrical Code.

301.11 Plumbing connections.

Potable water supply and building drainage system connections to equipment and appliances regulated by this code shall be in accordance with the New York City Plumbing Code.

301.12 Fuel types.

Fuel-fired appliances shall be designed for use with the type of fuel to which they will be connected and the altitude at which they are installed. Appliances that comprise parts of the building mechanical system shall not be converted for the usage of a different fuel, except where approved and converted in accordance with the manufacturer's instructions. The fuel input rate shall not be increased or decreased beyond the limit rating for the altitude at which the appliance is installed.

301.13 Reserved.

301.14 Repair.

Defective material or parts shall be replaced or repaired in such a manner so as to preserve the original approval or listing.

301.15 Wind resistance.

Mechanical equipment, appliances and supports that are exposed to wind shall be designed and installed to resist the wind pressures determined in accordance with the New York City Building Code.

301.16 Flood hazard.

For structures located in flood hazard areas, mechanical systems, equipment and appliances shall comply with the additional requirements of Appendix G of the New York City Building Code.

301.16.1 High-velocity wave action.

For buildings in coastal high-hazard areas and coastal A-zones as established in Section G102 of the New York City Building Code, mechanical systems and equipment shall not be mounted on or penetrate through breakaway walls.

301.17 Rodentproofing.

Buildings or structures and the walls enclosing habitable or occupiable rooms and spaces in which persons live, sleep or work, or in which feed, food or foodstuffs are stored, prepared, processed, served or sold, shall be constructed to protect against the entrance of rodents in accordance with Appendix F of the New York City Building Code.

301.18 Seismic resistance.

Where earthquake loads are applicable in accordance with the New York City Building Code, mechanical system supports shall be designed and installed for the seismic forces in accordance with the New York City Building Code.

Collected 2026-09-06T02:48:57Z. Source file · JSON

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