How to keep the air inside your home clean during wildfires
Summary
Wildfire smoke contains tiny particles that can harm health and linger in the air for days. Experts advise staying indoors and using air filters, either built into air conditioners or portable ones, to keep indoor air clean during smoke events.Key Facts
- Wildfire smoke has small particles that cause short-term and long-term health problems.
- Smoke can spread over large areas and stay for multiple days.
- Central air conditioners can help clean indoor air if they have high-quality filters (MERV 13 or above) and recirculate inside air.
- Portable air filters with HEPA filters are effective and should not produce ozone, which is harmful.
- DIY air filters made by attaching furnace filters to box fans are affordable and work well.
- Running the AC fan continuously during smoke events is recommended.
- Window AC units often lack proper filters, so pairing them with portable or DIY air filters is best.
- Heat combined with smoke worsens health risks, so keeping cool and filtering air is important.
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