Indoor Air Quality
Overall, Canada takes a multi-faceted approach to indoor air quality, combining federal and provincial regulations with industry standards and guidelines. Regular maintenance, monitoring, and prompt investigation of issues are emphasized for maintaining good IAQ.
Federal Regulations
The Canada Occupational Health and Safety Regulations require employers to:
• Develop procedures for investigating dangerous indoor air quality (IAQ) situations
• Appoint a qualified person to set written instructions for HVAC system operation, inspection, testing, cleaning and maintenance
• Keep records of IAQ complaints and investigations for at least 5 years
Provincial/Territorial Regulations
Most jurisdictions have regulations requiring:
• Adequate supply of fresh air in indoor workplaces
• Standards for ventilation system design, operation, cleaning and maintenance
Specific requirements vary by province/territory.
Standards and Guidelines
• ASHRAE Standard 62.1 - Ventilation for Acceptable Indoor Air Quality is commonly referenced
• Health Canada has published Indoor Air Reference Levels for various contaminants
• The Canadian Standards Association (CSA) also provides relevant standards
Key Recommendations
• Maintain relative humidity between 30-50%
• Keep air velocity below 0.2 m/s for comfort
• Use HVAC systems with proper filtration
• Regularly inspect, clean and maintain ventilation systems
• Investigate IAQ complaints promptly
• Improve ventilation and remove pollutant sources to enhance IAQ
Discover how we can assist you with your indoor air quality by reaching out to us at service@kontrolbuildings.ca