Code Library › Volume 1 › Section 9.32 — Ventilation
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.32.3.1.Required Ventilation

(1) The heating-season ventilation required by Clause 9.32.1.2.(1)(b) shall be provided by a mechanical ventilation system complying with (a) good practice such as that described in CAN/CSA-F326-M, “Residential Mechanical Ventilation Systems,” (b) for dwelling units with 5 or fewer bedrooms, the balance of this Subsection, or (c) Part 6. (See Note A-9.32.3.1.(1)) (2) Mechanical ventilation systems complying with the balance of this Subsection shall incorporate at least the following components: (a) a principal ventilation system complying with Article 9.32.3.3., (b) supplemental exhaust fans complying with Article 9.32.3.7., and (c) protection against depressurization in accordance with Article 9.32.3.8.
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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.