1221.7 Clearance to Combustibles — 2025 California Mechanical Code
California Mechanical Code (Title 24, Part 4) · 2025 edition · updated 2026-09-25 · 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) § 1221.7 · Effective January 1, 2026 · Official source: Building Standards Commission
Hydronic piping where the exterior temperature exceeds 250°F (121°C) shall have a clearance of not less 1 inch (25.4 mm) to combustible materials.
272 2025 CALIFORNIA MECHANICAL CODE
CALIFORNIA MECHANICAL CODE – MATRIX ADOPTION TABLE
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