How Do They Compare Side by Side?
True HEPA (H11-H13)
- ✅ 99.97% capture at 0.3 microns (DOE standard)
- ✅ EN 1822 standardized testing
- ✅ Effectively removes pollen, dust mites, pet dander
- ✅ Proven in medical and cleanroom applications
- ✅ Widely available in quality air purifiers
- ❌ More expensive filter media
- ❌ Slightly more airflow resistance
- ❌ Heavier filter media increases unit weight
HEPA-Type / HEPA-Style
- ✅ Lower cost filter media
- ✅ Less airflow resistance (higher CADR possible)
- ✅ Some models capture 95-99% (comparable to H10-H11)
- ❌ No standardized testing requirement
- ❌ Capture rate varies wildly (85-99%)
- ❌ Marketing terms are misleading
- ❌ May not remove fine smoke or allergen particles
Which One Should You Choose?
For anyone with allergies, asthma, or concern about air quality, True HEPA is the only reliable choice. HEPA-type filters are acceptable for casual dust removal but their unregulated performance makes them unsuitable when air quality truly matters.
Frequently Asked Questions
What does HEPA-type actually mean?
HEPA-type, HEPA-style, and HEPA-like are unregulated marketing terms indicating a filter that resembles HEPA but has not been tested to the DOE standard of 99.97% at 0.3 microns. Actual performance varies widely.
Is H13 better than True HEPA?
H13 is a specific grade within True HEPA (H11-H13 under EN 1822). H13 captures 99.95% at 0.3 microns, exceeding the DOE minimum. H14 captures 99.995% and is used in cleanrooms. For home use, H11-H13 is sufficient.
Can I tell if my air purifier has True HEPA?
Look for 'True HEPA' and 99.97% capture at 0.3 microns or references to the DOE standard. Be suspicious of 'HEPA-type,' 'HEPA-style,' 'HEPA-like,' or 'HEPA-grade.' Reputable brands clearly state True HEPA.