Chapter 1 — GENERAL CODE PROVISIONS
104.2 Exempt Work — 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) § 104.2 · Effective January 1, 2026 · Official source: Building Standards Commission
A permit shall not be required for the following:
(1) A portable heating appliance, portable ventilating equipment, a portable cooling unit, or a portable evaporative cooler.
(2) A closed system of steam, hot, or chilled water piping within heating or cooling equipment regulated by this code.
(3) Replacement of a component part that does not alter its original approval and is in accordance with other applicable requirements of this code.
(4) Refrigerating equipment that is part of the equipment for which a permit has been issued pursuant to the requirements of this code.
(5) A unit refrigerating system.
Exemption from the permit requirements of this code shall not be deemed to grant authorization for work to be done in violation of the provisions of the code or other laws or ordinances of this jurisdiction.
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