Part 6 Ventilation Design in Ontario
Specialized ventilation compliance for Ontario homes with five or more bedrooms — OBC Part 6 compliant reports, detailed schedules, and PEO-stamped drawings delivered in 3–5 business days.
Get a Free QuoteWhat's Included
- OBC Part 6 Section 6.2 ventilation requirements analysis for your specific project
- Airflow calculations for all occupancy-based and area-based ventilation requirements
- Ductwork layout and sizing for primary supply, exhaust, and transfer air systems
- Equipment schedule with unit selections and performance data
- Compliance report documenting conformance with OBC Part 6 requirements
- Coordination notes for architectural and structural integration
- Stamped drawings and schedules ready for municipal review
Turnaround
3–5 business days from receipt of architectural drawings. Rush service is available for urgent projects.
Deliverables
- Stamped ventilation layout drawings (PDF)
- OBC Part 6 compliance report
- Ventilation calculation sheets — occupancy and area-based requirements
- Equipment schedule with performance ratings
- Ductwork sizing summary
Codes & Standards
- OBC 2024 Part 6 — Ventilation (Section 6.2)
- ASHRAE 62.1 — Ventilation for Acceptable Indoor Air Quality (referenced for Part 6 compliance paths)
- OBC 2024 Part 9 — Section 9.32 (comparison for Part 9 vs Part 6 applicability)
Who This Is For
Architects and builders of large custom homes with five or more bedrooms, where OBC Part 6 ventilation requirements apply instead of the simpler Part 9 Section 9.32 rules. Common in high-end residential developments throughout the GTA and surrounding Ontario communities.
Frequently Asked Questions
When does Part 6 ventilation apply instead of Part 9?
In Ontario, residential buildings with five or more bedrooms may fall under OBC Part 6 ventilation requirements rather than the simpler Part 9 Section 9.32 rules. The specific trigger depends on the building classification and configuration. We determine which part applies and design accordingly.
Is Part 6 ventilation design more complex than a standard HRV design?
Yes. Part 6 involves more detailed airflow calculations, more stringent equipment and ductwork documentation, and more detailed compliance reporting than a typical Part 9 Section 9.32 HRV design. It requires a designer experienced with both OBC Parts.
Do you coordinate with the architect and structural engineer on these projects?
Yes. Large residential projects typically require coordination between mechanical, structural, and architectural consultants. We provide dimensioned duct routing and sleeve requirements so the architect and structural engineer can accommodate the mechanical systems appropriately.
How do you handle phased projects or design changes after the permit is issued?
Design changes that affect the ventilation system after permit issuance require revised drawings and potentially a permit revision submission. We provide revised stamped drawings when required, and address city comments on revisions at no additional cost.