Avoid "HEPA-like" or "HEPA-type" filters. Look for "True HEPA" (H13) which captures 99.97% of particles.
Traffic pollution (NO2 and fine particulate matter) seeps into homes; a purifier helps scrub these outdoor pollutants. It might be a waste of money if: should i buy an air purifier
Even if you aren't right next to the flames, smoke particles travel hundreds of miles and are small enough to enter your bloodstream. Avoid "HEPA-like" or "HEPA-type" filters
A purifier can catch spores in the air, but it won’t stop mold from growing on your walls. You need a dehumidifier or a plumber for that. It might be a waste of money if:
High-quality purifiers (with HEPA filters) are excellent at capturing pollen, dust mites, and pet dander, which can significantly reduce your symptoms at night.
You’ll need to replace filters every 6–12 months. Check the price of replacements before you commit to the machine.