The Ontario Building Code | Heating Coils
9.31.6.5. Heating Coils
(1) Heating coils of service water heaters shall not be installed in a flue or in the combustion chamber of a boiler or furnace heating a building.
Section 9.32. ventilation
9.32.1. General
In Plain Language
Heating coils used to heat domestic water must meet the requirements set out in this article.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.