Code Library › Volume 1 › Section 9.33 — Heating and Air-Conditioning
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.33.6.14.Filters and Odour Removal Equipment

(1) Air filters for air duct systems shall conform to the requirements for Class 2 air filter units as described in CAN/ULC-S111, “Standard Method of Fire Tests for Air Filter Units.” (2) When electrostatic-type filters are used, they shall be installed so as to ensure that the electric circuit is automatically de-energized when filter access doors are opened or, in dwelling units, when the furnace circulation fan is not operating. (3) When odour removal equipment of the adsorption type is used it shall be (a) installed to provide access so that adsorption material can be reactivated or renewed, and (b) protected from dust accumulation by air filters installed on the inlet side.
← Previous9.33.6.13. Return-Air System (See Note A-9.33.6.13.)Next →9.33.6.14A. Exhaust Ducts and Outlets

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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.