Code Library › Volume 1 › Section 6.3 — Ventilation Systems

PART 6 — HEATING, VENTILATING AND AIR-CONDITIONINGUpdated for the 2024 Ontario Building Code

6.3.2.2.Drain Pans (See Note A-6.3.2.2.)

(1) HVAC systems that generate condensate or introduce liquid water into the airstream in the ducts shall be equipped
    with drain pans that are
    (a) designed in accordance with Section 5.10, Drain Pans, of ANSI/ASHRAE 62.1, “Ventilation for Acceptable Indoor
         Air Quality,”
    (b) provided with an outlet that is piped to the outside of the airstream in a location where condensate can be safely
         disposed of,
    (c) installed so that water does not stagnate and drains from the pan, and
    (d) provided with a drain line that is indirectly connected to a drainage system in accordance with Article 7.4.2.1.

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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.