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How Many Air Quality Monitors Do You Need for WELL or RESET?

Firstly, congratulations on getting started with the building certification process! Now that you are looking into the details of each requirement, it can get overwhelming, especially when it comes to the air quality part. But don’t worry, we are here to help!

Whether you are applying for WELL or RESET, both building standards have specific air quality monitoring requirements. To get started, you may want to think about these two questions:

  • Which air quality monitor should I use?
  • How many of them do I need?

When it comes to choosing the best air quality monitor for your building, there are many factors to take into consideration, and you can read our blog article specifically on this topic to guide you through the process. And if you already know which monitor to choose, now let’s tackle the second question together - calculating how many monitors you need.

Office room 2.0

WELL V2 Building Standard

IWBI’s WELL certification program focuses on the wellness of building occupants. Because IAQ is such an important factor for health and well-being, WELL promotes air quality monitoring and awareness as one of its central components.

To meet WELL v2 certification requirements, monitor density must be one per floor or one monitor per 3500 ft² (325 m²), whichever one is more stringent. Monitors must also be over one meter away from windows, door, or vents, and 3.6-5.5 ft (1.1-1.7 m) above the floor in areas where people are regularly sitting or standing.

RESET Building Standard

The RESET Air building standard was created expressly for air quality monitoring and improvement. This building certification requires ongoing, comprehensive monitoring with RESET-accredited monitors only.

In accordance with the requirements for the RESET™ Air Standard for Commercial Interiors, you need one monitor per 5382 ft² (500 m²). Monitors must also be wall-mounted and 36-71 in (900-1800 mm) above the floor. All monitors should be located five or more meters away from operable windows, fresh-air diffusers, and air filters. If this isn’t possible due to space, monitors must be closer to air returns than air diffusers and must be at least half of the space away from operable windows.

Try Our Free Calculator

Because these calculations can be tricky, and you want to get them right the first time, we created a calculator tool. When using this free tool, all you need to do is input your area measurement, whether you used feet or meters, and the floor count. The calculator tool will automatically generate the number of monitors you will need for your project. Simple, right?

Check Out Our Calculator


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Kaiterra is a global company on a mission to end air pollution. We make air monitors that empower people to make small changes in their everyday lives and help with researchers, NGOs, and governments around the world to end air pollution at the source.