In 2016, the Ontario Building Code was amended to add a new article for general provisions for laundry-dryer equipment venting in residential occupancies. Under section 22.214.171.124 (Ventilation of Rooms and Spaces), the following requirements were added as follows:
Venting of Laundry-Drying Equipment
(1) Exhaust ducts or vents connected to laundry-drying equipment shall discharge directly to the outdoors.
(2) Exhaust ducts connected to laundry-drying equipment shall be
(a) independent of other exhaust ducts,
(b) accessible for inspection and cleaning, and
(c) constructed of a smooth corrosion-resistant material.
(3) Where collective venting of multiple installations of laundry-drying equipment is used, the ventilation system shall
(a) be connected to a common exhaust duct that is vented by one central exhaust fan and incorporates one central lint trap,
(b) include an interlock to activate the central exhaust fan when laundry-drying equipment is in use, and
(c) where required by Article 126.96.36.199, be provided with make-up air.