Code Library › Volume 1 › Section 6.6 — Refrigeration and Cooling Systems

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

6.6.1.1.Cooling Units

(1) Where a cooling unit is combined with a fuel-fired furnace in the same duct system, the cooling unit shall be
     installed
     (a) in parallel with the heating furnace,
     (b) upstream of the furnace provided the furnace is designed for such application, or
     (c) downstream of the furnace provided the cooling unit is designed to prevent excessive temperature or pressure in the
           refrigeration system.

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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.