OBC 9.32

Building Code Sections - Consumer Protection pillar

Also known as: Ontario Building Code 9.32, OBC Section 9.32

Ontario Building Code Section 9.32: Ventilation. Sets HRV/ERV requirements, exhaust capacity minimums, and CO alarm placement rules for residential construction.

Section 9.32 of the Ontario Building Code governs residential ventilation and indoor air quality. Sub-sections cover principal ventilation requirements (mandatory HRV or ERV in new homes since 2017), exhaust ventilation minimums (bathroom 25 L/s, kitchen 50 L/s continuous or 100 L/s intermittent), CO alarm placement (Sub-section 9.32.3, the Hawkins-Gignac amendment), and combustion air requirements for fuel-burning appliances. Compliance is verified at building permit closeout in most municipalities.

Glossary

• Ontario Building Code
• Hrv
• Erv
• Co Alarm
• Make Up Air

Related Guides

• Co Detector Placement Ontario
• Combustion Air Requirements Ontario

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