What is “UltraHEPA” and how is it different from HEPA 14?
“UltraHEPA” is AirDoctor’s own brand name, not an independent classification. AirDoctor advertises capture of very small particles, but the term is not tied to the EN 1822 scale the way HEPA 13 (True HEPA) and HEPA 14 are. The AirPro’s HEPA 14 is the highest common consumer HEPA grade — one step above True HEPA — and is defined by a published standard you can verify. See HEPA 14 Filtration and HEPA 14 vs. True HEPA.Which removes more particles?
For everyday pollutants — pollen, dust, pet dander, mold spores, and fine smoke — both rely on dense mechanical media, which is the proven method. The meaningful, checkable claim is the grade: the AirPro captures 99.995% of particles at 0.3 microns and 99.9% down to 0.1 microns to the EN 1822 standard. AirDoctor’s headline figures rest on its own testing rather than a standardized grade, so the AirPro is the more transparent, verifiable spec.How do they compare on odors, VOCs, and germs?
Both include an activated-carbon/VOC stage for smoke, cooking odors, and formaldehyde. The AirPro adds a fully enclosed UV-C (254 nm) germicidal stage that acts on bacteria and mold after the HEPA 14 filter traps them, with no ozone and no user UV exposure — see UV-C Sterilization. AirDoctor relies on its dual filter without a dedicated UV-C stage.Quick comparison
No air purifier — whatever the filter is branded — cures, treats, or prevents any illness. These devices reduce airborne particles and some gases in the air that passes through them. The AirPro is a wellness appliance, not a medical device.
Which should you buy?
Choose the AirPro if you want a filter grade you can verify against a published standard (HEPA 14 / EN 1822), an added enclosed UV-C stage, quiet 25 dB night operation, and a 60-day risk-free trial at $169. Consider AirDoctor if you specifically prefer its brand and dual-filter design and are comfortable with a proprietary “UltraHEPA” rating rather than a standardized grade. For buyers who want dependable, checkable filtration for allergies, asthma, smoke, and mold-related concerns, the AirPro’s HEPA 14 + UV-C is the more transparent value. SonoHealth is a Google Top Quality Store (sitewide 4.7 stars across 673 verified reviews — a store-wide figure, not this product’s own rating) and backs the AirPro with a 60-day free trial.Related: AirPro vs. Competitors · AirPro vs. IQAir · HEPA 14 vs. True HEPA · Best HEPA 14 Air Purifier · Buy AirPro