Home › Large (250–399 CADR) › Alen BreatheSmart 75i
Alen BreatheSmart 75i
#8 of 18 in large · #16 of 49 overall · all Alen models
3.3
Quiet at full speed and well built; price per CADR is high.
347 cfmsmoke CADR
538 sq ftAHAM room size
49 dBat full speed
60 Wmax power
$599street price, being verified
One air change of a 300 sq ft room in about 7 min$99 a year in filters$1,094 to own for 5 yearsAHAM Verifide CADR
Ratings
Includes independent measurements from HouseFresh, Modern Castle.
Each rating places this unit among the others on a 0.5–5 scale, within its room-size class for the measures that scale with size and across the whole catalog for the rest. Weighted together they give the overall 3.3. Formula and weights.
Specifications
- Smoke CADR
- 347 cfm
- Dust CADR
- 350 cfm
- Pollen CADR
- 350 cfm
- AHAM room size
- 538 sq ft
- Maker's room size
- 1,300 sq ft
- Max power
- 60 W
- Noise (low / high)
- 25 / 49 dB
- Filter cost
- $99
- Filter life
- 12 months
- Filters per year
- $99
- 5-year cost of ownership
- $1,094
- True HEPA
- Yes
- Activated carbon
- 0.5 lb
- Auto mode (PM2.5 sensor)
- Yes
- App
- Yes
- Washable prefilter
- No
- AHAM Verifide
- Yes
- Energy Star
- Yes
- Weight
- 27.0 lb
- Released
- 2019
Independent measurements
| Metric | Value | Source |
|---|---|---|
| Time to clear test room 728 cu ft test room; incense smoke cleared to PM1 zero (100%); top speed (5 of 5). 36 min at speed 2 | 18 min | HouseFresh 2026-08 |
| Measured CADR HouseFresh estimated PM1 CADR from 728 cu ft decay test at top speed; not an AHAM lab test. 164 cfm at speed 2 (sub-45 dBA) | 333 cfm | HouseFresh 2026-08 |
| Measured CADR, % of rated 333 cfm HouseFresh PM1 CADR vs 347 cfm rated smoke CADR | 96 % | HouseFresh 2026-08 |
| Noise, measured speed 1 of 5 (lowest); 3 ft | 36.5 dBA | HouseFresh 2026-08 |
| Noise, measured speed 5 of 5 (top); 3 ft | 57.5 dBA | HouseFresh 2026-08 |
| Power draw, measured speed 5 of 5 (top) | 47.4 W | HouseFresh 2026-08 |
| Particle reduction computed from stated readings: PM2.5 93.4 to 0.2 after 1 hour at max fan speed in a roughly 14x10 ft room after 30 s of incense; Fresh filter; particle count 11865 to 44 | 99.8 % | Modern Castle 2024-02 |
| Noise, measured maximum fan speed; distance not stated; ambient 39.6 dB; minimum speed indistinguishable from ambient | 50.3 dBA | Modern Castle 2024-02 |
How it compares with its neighbors
| # | Model | Smoke CADR | Dust | Pollen | W | dB max | Filters/yr | $/CADR | Score |
|---|---|---|---|---|---|---|---|---|---|
| 5 | Levoit EverestAir | 360 | 340 | 350 | 49 | 52 | $160 | 1.1 | 3.5 |
| 6 | Coway Airmega 300 | 300 | 300 | 300 | 57 | 52 | $110 | 0.9 | 3.5 |
| 7 | Coway Airmega 400 | 350 | 350 | 350 | 66 | 52 | $130 | 1.1 | 3.4 |
| 8 | Alen BreatheSmart 75i | 347 | 350 | 350 | 60 | 49 | $99 | 1.7 | 3.3 |
| 9 | Coway Airmega 400S | 350 | 350 | 350 | 66 | 52 | $130 | 1.3 | 3.3 |
| 10 | Blueair Blue Pure 211+ Auto | 350 | 350 | 350 | 61 | 56 | $140 | 0.8 | 3.3 |
| 11 | Blueair Blue Pure 211+ | 350 | 350 | 350 | 61 | 56 | $140 | 0.7 | 3.3 |