Alen BreatheSmart 25i: CADR, room size and running cost
Smoke CADR 97 cfm · Room size 150 sq ft (ENERGY STAR) · 90 kWh/yr ≈ $16.48/yr electricity (estimate)
Certified specs
| Smoke CADR | 97 cfm |
|---|---|
| Dust CADR | 106 cfm |
| Pollen CADR | 105 cfm |
| PM2.5 CADR | 102 cfm |
| ENERGY STAR effective room size | 150 sq ft (1.55 × smoke CADR, per 10 CFR 429.68) |
| Annual energy use | 90 kWh/yr |
| Integrated energy factor | 6.6 cfm/W |
| Smoke CADR per watt | 6.38 cfm/W |
| Ozone emissions (reported) | 0 ppb |
| Technology | Fan and Filter |
| Filter types listed | HEPA-Type |
| Automatic mode | Air Quality Sensor |
| Connected (app/Wi-Fi) | Yes (Wi-Fi) |
| ENERGY STAR Most Efficient | Yes |
| Markets | United States, Canada |
| Date certified | 2025-08-20 |
| ENERGY STAR partner | Alen Corporation |
| Source | ENERGY STAR record 4481446 · Product Finder page |
How many air changes per hour would it give?
Estimate: air changes per hour (ACH) = smoke CADR × 60 ÷ room volume, at the top fan speed used for the CADR test. Real-world ACH is usually lower (lower fan speeds, furniture, filter loading).
| Room | ACH, 8 ft ceiling | ACH, 9 ft ceiling | AHAM sizing |
|---|---|---|---|
| 100 sq ft | 7.3 | 6.5 | Meets AHAM 2/3 rule |
| 150 sq ft | 4.8 | 4.3 | Below AHAM 2/3 rule |
| 200 sq ft | 3.6 | 3.2 | Below AHAM 2/3 rule |
| 300 sq ft | 2.4 | 2.2 | Below AHAM 2/3 rule |
| 400 sq ft | 1.8 | 1.6 | Below AHAM 2/3 rule |
| 500 sq ft | 1.5 | 1.3 | Below AHAM 2/3 rule |
| 700 sq ft | 1.0 | 0.9 | Below AHAM 2/3 rule |
AHAM's 2/3 rule: choose a smoke CADR of at least 2/3 of the room's area (8 ft ceiling). By that rule this model suits rooms up to about 146 sq ft.
Estimated yearly electricity cost
| Where | Residential rate | Per year | Per month |
|---|---|---|---|
| Louisiana | 12.72¢ | $11.45 | $0.95 |
| U.S. average | 18.31¢ | $16.48 | $1.37 |
| California | 33.61¢ | $30.25 | $2.52 |
| Hawaii | 48.00¢ | $43.20 | $3.60 |
Estimate = 90 kWh/yr × rate. Rates: EIA Table 5.6.A, July 2026 (preliminary). Filter replacement cost is not included (data gap: not in ENERGY STAR data). Use your own rate and hours.
Similar CADR from other brands
| Model | Smoke CADR (cfm) | ENERGY STAR room size (sq ft) | Energy use (kWh/yr) | Est. electricity/yr* |
|---|---|---|---|---|
| Blueair Pure 411 | 98 | 152 | 64 | $11.72 |
| Blueair 1831022000 | 90 | 140 | 75 | $13.73 |
| Dreo DR-HTF022S | 90 | 140 | 102 | $18.68 |
| Dreo DR-HAP006 | 102 | 158 | 102 | $18.68 |
| Dreo DR-HAP006S | 102 | 158 | 102 | $18.68 |
| Bosch Air 2000 | 86 | 133 | 104 | $19.04 |
*Estimate: ENERGY STAR annual kWh × U.S. average residential rate 18.31¢/kWh (EIA, July 2026 (preliminary)). ENERGY STAR's annual figure assumes 16 hours/day of operation under the DOE test procedure.
Compare this model side by side with any other · All Alen models
See Alen air purifiers on the manufacturer's site (plain link, not an affiliate link)
We have not tested this product. Figures are as listed in ENERGY STAR data retrieved 2026-10-17.