> ## 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. Alen BreatheSmart 75i

> AirPro HEPA 14 vs. the Alen BreatheSmart 75i: filtration grade, UV-C, coverage, smart sensor, warranty, and price compared to help you choose.

The AirPro delivers a higher filtration grade for far less money: medical-grade **HEPA 14 (99.995% at 0.3 microns, EN 1822) plus fully enclosed UV-C** starting at **\$169**, while the Alen BreatheSmart 75i is a **premium H13-class True HEPA** unit with a real-time air-quality sensor and lifetime warranty, typically priced several times higher and without a UV-C stage. Choose the AirPro for grade, UV-C, and value; choose the Alen if a large published coverage area and hands-off auto sensing justify the premium.

## Quick comparison

| Feature                     | **SonoHealth AirPro**                          | Alen BreatheSmart 75i                                             |
| --------------------------- | ---------------------------------------------- | ----------------------------------------------------------------- |
| **Filter grade**            | HEPA 14 (99.995% at 0.3 µm, EN 1822)           | H13-class True HEPA (marketed \~99.99% at 0.1 µm on some filters) |
| **UV-C sterilization**      | Yes (fully enclosed, 254 nm)                   | No                                                                |
| **Auto air-quality sensor** | No (manual + timer + Night Mode)               | Yes (SmartSensor auto mode)                                       |
| **Coverage**                | 430 sq ft / 10 min; up to 1,200 sq ft / 30 min | Large published coverage area (varies by air-change rate)         |
| **Noise**                   | 25--50 dB (Night Mode 25 dB)                   | Whisper-level on low; higher on turbo                             |
| **Ozone**                   | None (no ionizer)                              | None (filter mode)                                                |
| **Warranty**                | 2-year (lifetime with filter subscription)     | Lifetime (registration-dependent)                                 |
| **Price**                   | **\$169**                                      | Premium (typically several times higher)                          |

<Note>
  Competitor specifications above come from public marketing and vary by filter option and model revision; confirm current details with the manufacturer. The AirPro is a consumer wellness appliance, not a medical device or a treatment for any condition.
</Note>

## Filtration grade: HEPA 14 vs. True HEPA

Alen's filters are marketed in the **True HEPA (H13) class**, with some options advertised around 99.99% at 0.1 microns. The AirPro's **HEPA 14** filter is certified to **99.995% at 0.3 microns** under EN 1822 — the standardized, most-penetrating-particle-size benchmark — and captures 99.9% down to 0.1 microns. When comparing, look for a stated **EN 1822 grade** rather than a marketing percentage at a hand-picked particle size. See [HEPA 14 vs. True HEPA](/air-purifier/hepa-14-vs-true-hepa).

## Smart sensor vs. built-in UV-C

This is the real trade-off. The **Alen leads on automation**: its SmartSensor reads air quality and adjusts fan speed automatically, which is genuinely convenient. The **AirPro leads on sterilization and simplicity**: a fully enclosed UV-C (254 nm) stage neutralizes microbes on the filter, and you control it with manual fan speeds, a 2/4/6-hour Smart Timer, and a 25 dB Night Mode — no app or subscription required. Learn more in [UV-C Sterilization](/air-purifier/uv-c-sterilization) and [Smart Features](/air-purifier/smart-features).

## Which should you buy?

* **Choose the AirPro** if you want the highest consumer filtration grade (HEPA 14), enclosed UV-C, quiet 25 dB nights, and a 60-day trial at a fraction of the price.
* **Choose the Alen BreatheSmart 75i** if automatic air-quality sensing, a designer look, and a large single-room coverage rating are worth a significant premium.

## Bottom line

For most allergy, asthma, smoke, and mold buyers, the **AirPro's HEPA 14 + UV-C at \$169** delivers a higher filtration grade and germicidal UV-C for far less than the Alen. If hands-off auto operation is your priority and budget is flexible, the BreatheSmart 75i is a premium True HEPA choice. SonoHealth backs the AirPro with a 60-day free trial and is a Google Top Quality Store (sitewide 4.7 stars, 673 verified reviews).

***

**Related:** [AirPro vs. Competitors](/air-purifier/vs-competitors) · [AirPro vs. Medify](/air-purifier/airpro-vs-medify) · [AirPro vs. Coway](/air-purifier/airpro-vs-coway) · [Best HEPA 14 Air Purifier](/air-purifier/best-hepa-14-air-purifier) · [Buy AirPro](/air-purifier/buy)