413.1 Rooms in areas where excessive heat or moisture is — 2025 California Mechanical Code
California Mechanical Code (Title 24, Part 4) · 2025 edition · updated 2026-10-19 · California
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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) § 413.1 · Effective January 1, 2026 · Official source: Building Standards Commission
generated, where objectional odors or dust are present, or where flammable or toxic gases may accumulate, which are used by health facility personnel or patients, shall be pro-
vided with exhaust ventilation to change the air a minimum of ten times per hour.
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