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The core difference is filtration grade and sterilization: the SonoHealth AirPro uses medical-grade HEPA 14 (99.995% at 0.3 microns, EN 1822) plus fully enclosed UV-C, while the Medify MA-40 is a well-reviewed H13-class “True HEPA” purifier (marketed at 99.9% at 0.3 microns) with a large touch panel but no UV-C stage. Both are strong mechanical purifiers; the AirPro sits one grade higher and adds germicidal UV-C at a lower entry price of $169.

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Quick comparison

Competitor specifications above are drawn from public marketing and may change by model or revision. Verify current details on the manufacturer’s site. An air purifier reduces airborne particles; it is a wellness appliance, not a medical device or a treatment for any condition.

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Which one filters more thoroughly?

Both are genuine HEPA purifiers, but they sit one grade apart. The Medify MA-40 uses an H13-class filter marketed as capturing 99.9% of particles at 0.3 microns — the “True HEPA” tier. The AirPro’s HEPA 14 filter is certified to 99.995% at 0.3 microns under EN 1822, so roughly 10× fewer particles slip through at the most-penetrating particle size. For everyday dust the gap is small; for wildfire smoke, ultrafine allergen fragments, or an immunocompromised household it is the meaningful upgrade. See HEPA 14 vs. True HEPA.

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Does UV-C matter here?

This is the clearest functional gap. The AirPro adds a fully enclosed UV-C (254 nm) stage that targets bacteria and mold after the filter traps them, sealed inside the unit with no user exposure and no ozone. The MA-40 relies on filtration alone. Learn how the AirPro’s works in UV-C Sterilization.

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What about coverage and noise?

Medify publishes coverage using air-change rates, while SonoHealth publishes coverage as area over time (430 sq ft in 10 minutes; up to 1,200 sq ft in 30 minutes). Because the two use different yardsticks, match each to your room with Room Coverage and CADR vs. ACH Explained rather than comparing headline numbers. On noise, the AirPro’s 25 dB Night Mode is engineered for bedrooms and nurseries.

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Which should you buy?

  • Choose the AirPro if you want the higher HEPA 14 grade, built-in enclosed UV-C, near-silent 25 dB night operation, and a 60-day risk-free trial at $169.
  • Choose the Medify MA-40 if a large touch-panel display and its True HEPA filtration are enough for your space and you don’t need UV-C.

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Bottom line

For allergy, asthma, smoke, and mold-focused buyers who want the strongest filtration and sterilization for the price, the AirPro’s HEPA 14 + UV-C at $169 is the stronger value. The MA-40 is a capable True HEPA alternative. SonoHealth is a Google Top Quality Store (sitewide 4.7 stars across 673 verified reviews) and backs the AirPro with a 60-day free trial.
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