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A Comprehensive Guide to Building Air Quality Standards and Monitoring

This guide covers the essential aspects of building air quality standards and monitoring, including WELL and RESET certifications, air quality monitor placement, and best practices for maintaining healthy indoor air quality in commercial buildings.

A Comprehensive Guide to Building Air Quality Standards and Monitoring


Maintaining healthy indoor air quality is crucial for the well-being and productivity of building occupants. With the increasing focus on wellness in the workplace, building owners and facility managers are looking to air quality monitoring requirements and certifications to ensure their spaces meet the highest standards. In this comprehensive guide, we'll explore the key building air quality standards, such as WELL and RESET, and best practices for implementing effective air quality monitoring systems.

office workers in a modern, well-ventilated workspace

Building Air Quality Standards

WELL Building Standard

The WELL Building Standard is a performance-based system that measures, certifies, and monitors features of the built environment that impact human health and well-being. It takes a holistic approach, addressing air, water, nourishment, light, fitness, comfort, and mind. To meet WELL's air quality requirements, projects must install monitors based on occupiable space:

  • Projects with < 3,250 m²: 1 monitor per 325 m² (minimum 2)
  • Projects with 3,250-25,000 m²: 1 monitor per 500 m² (minimum 10)
  • Projects with > 25,000 m²: 1 monitor per 1,000 m² (minimum 50)

RESET Building Standard

The RESET Building Standard focuses specifically on indoor air quality monitoring and improvement. It requires ongoing, comprehensive monitoring using RESET-accredited monitors. Projects must install one monitor per 500 m² (5,382 ft²) and ensure they are wall-mounted 900-1,800 mm (36-71 in) above the floor. Monitors should be placed at least five meters away from doors, windows, fresh-air diffusers, and air filters.

Air Quality Monitor Placement

Proper placement of air quality monitors is essential for accurate data collection and effective monitoring. Consider the following guidelines:

  • Install monitors in regularly occupied spaces, such as lobbies, open offices, and conference rooms
  • Place monitors 1.1-1.7 m (3.6-5.6 ft) above the finished floor
  • Keep monitors at least 1 m (3.3 ft) away from doors, windows, air supply or exhaust outlets, and other potential influences
  • Ensure monitors measuring temperature and humidity are at least 1 m (3.3 ft) away from heat or cold sources
air quality monitor mounted on an office wall

Best Practices for Maintaining Healthy Indoor Air Quality

In addition to monitoring, there are several strategies for maintaining healthy indoor air quality in commercial buildings:

  1. Ensure proper ventilation and filtration systems are in place
  2. Regularly maintain and clean HVAC systems
  3. Use low-VOC materials and products
  4. Implement a green cleaning program
  5. Educate occupants on the importance of indoor air quality

By following these best practices and adhering to building air quality standards, facility managers can create healthier, more productive workspaces for their occupants.


As the demand for healthy, wellness-focused workplaces continues to grow, building owners and facility managers must prioritize indoor air quality. By understanding the key building air quality standards, implementing effective monitoring systems, and following best practices for maintaining healthy indoor environments, you can ensure your building meets the highest standards for occupant well-being and productivity.

smiling office workers in a bright, airy workspace

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