3 certified models
Alen air purifiers
Every Alen air purifier certified under ENERGY STAR and listed for the US market, fastest first. Each model page has the full certified specs and comparable machines from other makers.
| Model | Type | Smoke CADR | Room size | Annual energy use |
|---|---|---|---|---|
| BreatheSmart 25i | Fan and Filter | 97 cfm | 150 sq ft | 90 kWh/yr |
| BreatheSmart 35i | Fan and Filter | 150 cfm | 233 sq ft | 136 kWh/yr |
| BreatheSmart 75i_V2 | Fan and Filter | 370 cfm | 574 sq ft | 304 kWh/yr |
Source: ENERGY STAR certification data, US EPA. Data build 2026-09-29. Brand names are as the maker certified them, with obvious variant spellings merged.