Chapter 9 — INSTALLATION OF SPECIFIC APPLIANCES
925.3 Clearance — 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) § 925.3 · Effective January 1, 2026 · Official source: Building Standards Commission
The installation of infrared heaters shall comply with the following clearance requirements:
(1) Listed heaters shall be installed with clearances from combustible material in accordance with their listing and the manufacturer’s installation instructions.
(2) Unlisted heaters shall be installed in accordance with clearances from combustible material acceptable to the Authority Having Jurisdiction.
(3) In locations used for the storage of combustible materials, signs shall be posted to specify the maximum per
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| FLAME HEIGHT ABOVE BURNER HEAD (inches) |
MINIMUM CLEARANCE FROM COMBUSTIBLE MATERIAL (feet)* |
|
|---|---|---|
FLAME HEIGHT ABOVE BURNER HEAD (inches) |
HORIZONTAL | VERTICAL |
| 12 | 2 | 6 |
18 |
3 | 8 |
24 |
3 | 10 |
30 |
4 | 12 |
For SI units: 1 inch = 25.4 mm, 1 foot = 304.8 mm
- Measured from the nearest portion of the burner head.
INSTALLATION OF SPECIFIC APPLIANCES
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