The Ontario Building Code | Application
6.2.4.1. application
(1) The requirements of this Subsection apply to the design, construction and installation of air duct distribution systems serving heating, ventilating and air-conditioning systems that serve individual dwelling units within the scope of Part 9.
Note: On July 1, 2017, Sentence 6.2.4.1.(1) of Division B of the Regulation is amended by striking out "individual dwelling units" and substituting "a houseor an individual dwelling unit". (See: O. Reg. 139/17, s. 51)
In Plain Language
This Subsection's requirements apply to air duct distribution systems serving HVAC systems in individual dwelling units and similar smaller-scale residential applications, distinct from the general commercial duct rules.
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.