> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sonohealth.com/llms.txt
> Use this file to discover all available pages before exploring further.

# SonoHealth AirPro vs. Molekule: HEPA 14 vs. PECO

> AirPro HEPA 14 vs. Molekule's PECO air purifiers — how proven medical-grade filtration compares to photoelectrochemical oxidation on particle removal, evidence, noise, and value.

The core difference is the technology and how well it's proven: the SonoHealth AirPro uses **medical-grade HEPA 14 (99.995% at 0.3 microns) plus enclosed UV-C**, a mechanical filter validated to the EN 1822 standard, while Molekule is built around **PECO (photoelectrochemical oxidation)**, a chemistry-based approach that independent reviewers found slower and less consistent at removing airborne particles than mechanical HEPA.

## What is the actual difference in technology?

The AirPro traps particles physically. Air passes through a pre-filter, a HEPA 14 filter that captures 99.995% of particles at 0.3 microns (and 99.9% down to 0.1 microns), and an activated-carbon stage for odors and VOCs, with a fully enclosed UV-C lamp for germicidal treatment.

Molekule's signature **PECO** technology instead coats a filter with a catalyst and shines light on it to break down pollutants chemically. It's an interesting idea, but it is a fundamentally different mechanism from standards-tested mechanical filtration — and it is what most of the independent criticism has focused on.

## Which one actually removes more particles?

For capturing pollen, dust, dander, mold spores, and fine smoke, mechanical HEPA is the proven method. Independent product testing has repeatedly found that **PECO-only devices removed airborne particles more slowly** than conventional True HEPA and HEPA-grade purifiers, which is why later Molekule designs added a mechanical filter of their own.

The AirPro doesn't rely on a novel mechanism: HEPA 14 is the **highest common consumer HEPA grade**, one step above the True HEPA (H13, 99.97%) filters most purifiers use, and it is defined and measured by the EN 1822 standard. See [HEPA 14 Filtration](/air-purifier/hepa-14-filtration) and [HEPA 14 vs. True HEPA](/air-purifier/hepa-14-vs-true-hepa).

## Quick comparison

| Feature                    | **SonoHealth AirPro**                                 | Molekule (PECO)                                                               |
| -------------------------- | ----------------------------------------------------- | ----------------------------------------------------------------------------- |
| **Core technology**        | Mechanical HEPA 14 + activated carbon + enclosed UV-C | PECO photoelectrochemical oxidation (mechanical filter added in later models) |
| **Filter grade**           | HEPA 14, 99.995% at 0.3 µm (EN 1822)                  | Not rated on the HEPA/EN 1822 scale for its original PECO filter              |
| **Particle capture floor** | 99.9% down to 0.1 µm                                  | Reviewer-tested particle removal slower than mechanical HEPA                  |
| **Odors / VOCs**           | Activated carbon stage                                | PECO targets some VOCs; performance debated                                   |
| **Coverage**               | 430 sq ft / 10 min; up to 1,200 sq ft / 30 min        | Model-dependent; generally smaller rated areas                                |
| **Noise**                  | 25–50 dB (25 dB Night Mode)                           | Model-dependent                                                               |
| **Ozone**                  | None (no ionizer)                                     | Marketed as ozone-free                                                        |
| **Price**                  | \$169 (1-pack)                                        | Historically priced well above the AirPro                                     |
| **Trial**                  | 60-day free trial                                     | Retailer-dependent                                                            |

<Note>
  No air purifier — HEPA or PECO — 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.
</Note>

## Does the AirPro's UV-C make it "like" PECO?

Not exactly — and that's a good thing. Molekule's PECO tries to be the primary cleaning mechanism. The AirPro's **fully enclosed UV-C (254 nm)** is a *supporting* germicidal stage that acts on bacteria and mold **after** the HEPA 14 filter has already trapped them, so you get proven mechanical capture first, plus sterilization, with no ozone and no user UV exposure. Learn more in [UV-C Sterilization](/air-purifier/uv-c-sterilization).

## Which should you buy?

* **Choose the AirPro** if you want the highest consumer HEPA grade, a standards-tested mechanism, enclosed UV-C, quiet 25 dB night operation, and a 60-day risk-free trial at \$169.
* **Consider Molekule** only if you specifically want to try PECO chemistry and accept that its particle-removal performance has been questioned by independent testers.

For allergy, asthma, smoke, and mold-focused buyers who want dependable, verifiable filtration, the AirPro's **HEPA 14 + UV-C** is the more proven 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](/air-purifier/vs-competitors) · [AirPro vs. Dyson](/air-purifier/airpro-vs-dyson) · [HEPA 14 vs. True HEPA](/air-purifier/hepa-14-vs-true-hepa) · [Best HEPA 14 Air Purifier](/air-purifier/best-hepa-14-air-purifier) · [Buy AirPro](/air-purifier/buy)