Key factors to prioritize:

1.True HEPA (H13/H14): Must trap 99.95%+ of particles down to 0.3 microns (dust mites, pollen, pet dander).

2.Filter Replacements: Ensure certified replacement filters are readily available & affordable. A clogged filter is useless.

3.Avoid Ozone: Steer clear of any purifier generating ozone – it's a lung irritant.

4.Don't just buy marketing claims. Verify certifications! Investing in a truly compliant HEPA purifier is an investment in your child's comfort and healthier breathing.

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