Brief
CO2 Filters vs. Air Cleaners: What Indoor Air Devices Can and Cannot Do
A source-backed guide to the difference between particle filtration, ventilation, CO2 monitoring, and emerging carbon-capture devices for indoor air.
Topic track
Particle Filtration
Particle filtration, portable air cleaner sizing, HEPA limits, and the difference between particle removal and ventilation. This track collects recurring signal, linked entities, and the active brief set around the theme so readers can follow the subject over time instead of through one-off posts.
Why this track matters
Particle filtration is the lane for practical questions about portable air cleaners, HVAC filters, CADR, airflow, and what filters can or cannot remove.
The current editorial standard is to keep particle removal separate from ventilation and CO2 interpretation. HEPA-style filtration can reduce airborne particles, but it should not be described as a substitute for outdoor-air ventilation or as a CO2 removal method.
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Coverage in this lane
1 published pieces currently map to this track. Use it as the standing index for new signal, not just a tag archive.