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

9.33.5.2.Installation Standards (See also Article 9.33.5.3.)

(1) The design and installation of earth energy systems shall conform to CAN/CSA-C448.2, “Design and installation of earth energy systems for residential and other small buildings,” where such systems use groundwater, submerged heat exchangers or ground heat exchangers to serve, (a) a house with or without a secondary unit, or, (b) a building, a house with or without a secondary unit, where the conditioned space is not more than 1 400 m². (2) Except for a house with or without a secondary unit, the design and installation of earth energy systems shall conform to CAN/CSA-C448.1, “Design and installation of earth energy systems for commercial and institutional buildings,” where such systems use groundwater, submerged heat exchangers or ground heat exchangers to condition a floor space area more than 1 400 m².
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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.