O&L Duct Design provides complete residential HVAC design services for custom homes, additions, renovations, and permit applications across Ontario.

 

Our professional HVAC design packages include:

• Heat Loss & Heat Gain Calculations completed in accordance with CSA F280 standards

• Residential Ventilation Design for code-compliant airflow and indoor air quality

• HRV & ERV Layout Design for energy-efficient residential ventilation systems

• Detailed Residential Duct Design Plans optimized for airflow performance and practical installation

• HVAC Design Drawings for Residential Building Permit Applications

• Custom HVAC Layouts for New Homes, Additions, Renovations, and Secondary Suites

 

All HVAC designs are prepared to meet applicable Ontario Building Code requirements while focusing on:

• Proper equipment sizing

• Balanced air distribution

• Energy efficiency

• System performance

• Installer-friendly layouts