Chapter 3 — GENERAL REGULATIONS
307.3 Heat Pump and Electric Cooling Appliances — 2025 California Mechanical Code
California Mechanical Code (Title 24, Part 4) · 2025 edition · updated 2026-10-19 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Mechanical Code (Title 24, Part 4) § 307.3 · Effective January 1, 2026 · Official source: Building Standards Commission
Heat pumps and electric cooling appliances shall bear a permanent and legible factory-applied nameplate on which shall
appear:
(1) The name or trademark of the manufacturer.
(2) The model number or equivalent.
(3) The serial number.
(4) The amount of refrigerant.
(5) The refrigerant designation.
(6) The factory test pressures or pressures applied.
(7) The electrical rating in volts, amperes, and, for other than single phase, the number of phases.
(8) The output rating in Btu/h (kW).
(9) The electrical rating in volts, amperes, or watts of each field replaceable electrical component.
(10)The symbol of an approved agency certifying compliance of the equipment with recognized standards.
(11)Required clearances from combustible surfaces on which or adjacent to which it is permitted to be mounted.
An appliance shall be accompanied by clear and complete installation instructions, including required clearances from combustible other than mounting or adjacent surfaces, and temperature rating of field-installed wiring connections exceeding 140°F (60°C).
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