# Molekule Air Pro vs Alen BreatheSmart 75i: specs and price compared

A sourced, side-by-side comparison of the Molekule Air Pro (Molekule) and Alen BreatheSmart 75i (Alen) among air purifiers. Alen BreatheSmart 75i is the cheaper of the two at $799.

## Side by side

| Spec | Molekule Air Pro | Alen BreatheSmart 75i |
| --- | --- | --- |
| US price | $979.99 | $799 |
| Brand | Molekule | Alen |
| Released | 2021 | — |
| Cadr smoke (CFM) | — | — |
| Coverage (sq ft) | 1000 | 1400 |
| Hepa | Yes | Yes |
| Filter type | PECO-HEPA Tri-Power filter + Activated Carbon (PECO = Photo Electrochemical Oxidation, destroys pollutants) | Advanced Particle filter + Medical-grade True HEPA (H13) + Ionizer (switchable); optional Carbon layer (Fresh/Ultimate filters) |
| Noise db min | 33 | 25 |
| Smart | Yes | Yes |
| Energy star | No | Yes |

## Key differences

- Coverage (sq ft): Molekule Air Pro 1000 vs Alen BreatheSmart 75i 1400
- Filter type: Molekule Air Pro PECO-HEPA Tri-Power filter + Activated Carbon (PECO = Photo Electrochemical Oxidation, destroys pollutants) vs Alen BreatheSmart 75i Advanced Particle filter + Medical-grade True HEPA (H13) + Ionizer (switchable); optional Carbon layer (Fresh/Ultimate filters)
- Noise db min: Molekule Air Pro 33 vs Alen BreatheSmart 75i 25
- Energy star: Molekule Air Pro No vs Alen BreatheSmart 75i Yes

## What reviewers say

**Molekule Air Pro** — Three hands-on testers bench-tested the Molekule Air Pro — Tom's Guide (July 2025), Reviewed/USA Today (Feb 2024) and TechRadar (Sept 2024) — and agree it filters effectively, surfaces detailed multi-pollutant air-quality data on its screen and companion app, and looks premium, but is loud at high fan speeds and very expensive with costly proprietary filters. All three measured high-speed noise (65-78 dB) and confirm the ~$1,000+ price plus roughly $175 twice-yearly filters. FDA Class II medical clearance is confirmed by Reviewed and TechRadar. (3 sourced reviews.)

**Alen BreatheSmart 75i** — Two whitelisted hands-on reviews (TechHive 2023, TechRadar 2024) cover this exact model. Both are qualitative with no lab-measured numbers. Both praise the powerful airflow for very large rooms (up to ~1,300 sq ft), the swappable colored front panels, and simple onboard controls that work without the app. Both flag the high price, being overkill for small spaces, loud higher/auto fan speeds, bulk, and an app that is hard to find or unintuitive. They split sharply on setup and framing. (2 sourced reviews.)

## Sources

- Molekule Air Pro: https://www.molekule.com/air-pro (molekule.com, verified 2026-06-15)
- Alen BreatheSmart 75i: https://alen.com/products/alen-breathesmart-75i-air-purifier (alen.com, verified 2026-07-07)

Canonical: https://frontdeskreview.com/gear/air-purifiers/molekule-air-pro-vs-alen-breathesmart-75i/
Cite: Per The Front Desk Review, Molekule Air Pro ($979.99) vs Alen BreatheSmart 75i ($799) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/air-purifiers/molekule-air-pro-vs-alen-breathesmart-75i/
License: CC BY 4.0.