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.
PM2.5 is classified by the WHO as a Group 1 carcinogen. 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?
PM2.5 is a WHO Group 1 carcinogen 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.
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