Longevity by Design · Pillar · IAQM
Indoor Air Quality Metric
The Indoor Air Quality Metric is the third pillar of Longevity by Design. It targets fine-particulate (PM2.5) concentrations below the World Health Organization limit of 5 µg/m³, delivered through HEPA-13 filtration combined with mechanical ventilation with heat recovery (MVHR) and continuous monitoring. Because we spend roughly 90% of our hours indoors, the air inside a building is the single largest controllable exposure most people have.
particulate air pollution is classified as a Group 1 carcinogen by IARC, the WHO's cancer agency (2013). In many Turkish, Eastern European and South Asian urban areas, outdoor PM2.5 routinely runs three to five times the WHO threshold, so without specified filtration the indoor environment simply mirrors a harmful baseline. Sustained exposure below 5 µg/m³ is associated with measurable reductions in cardiovascular and respiratory disease incidence.
Frequently asked
What is the Indoor Air Quality Metric?
It is the air pillar of the Longevity by Design methodology — a specification that keeps indoor PM2.5 below the WHO limit of 5 µg/m³ using HEPA-13 filtration, heat-recovery ventilation and continuous monitoring.
Why is indoor PM2.5 important?
Particulate air pollution is classified as a Group 1 carcinogen by IARC, the WHO cancer agency (2013), and indoor air is where we spend about 90% of our time. Keeping it below 5 µg/m³ is associated with lower cardiovascular and respiratory disease risk.