The Ontario Building Code | Requirement for Venting
6.3.1.1. Requirement for venting ="http://thehandyforce.com/interior/bathroom-renovations/" title ="Toronto Bathroom renovation inspiration">venting
(1) Except as provided in Articles 6.3.1.2. and 6.3.1.3., the products of combustion from solid fuel-burning appliancesshall be vented in conformance with the requirements in the applicable appliance installation standards listed in Article 6.2.1.4.
In Plain Language
Except in specific cases, venting is required for fuel-fired appliances, removing combustion byproducts safely to the outdoors rather than allowing them to accumulate indoors.
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.