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Air purifier effectiveness for wildfire smoke at home

A public TESRAC example report on choosing and using home air purifiers for wildfire-smoke events.

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Public Fallback Report

Air purifier effectiveness for wildfire smoke at home

A public TESRAC example report on choosing and using home air purifiers for wildfire-smoke events.

Public fallback brief

  • HEPA filtration can meaningfully reduce indoor fine particulate matter when sized and operated correctly.
  • Clean air delivery rate, room volume, filter quality, and building leakage determine real-world effectiveness.
  • A clean-air room strategy can be more practical than treating an entire home.

Caveats

  • Indoor air quality depends on smoke severity, ventilation, and building envelope.
  • Some devices produce ozone or rely on marketing claims rather than filtration.

Source quality and freshness

Use public-health guidance, CADR data, independent tests, and manufacturer filter specifications.

Refresh before purchase because model availability and prices vary by fire season.

Example next steps

  1. Calculate room size and needed CADR.
  1. Choose true HEPA filtration and avoid ozone-generating devices.
  1. Prepare filters before wildfire season.