Home › Medium (130–249 CADR) › Alen BreatheSmart 45i
Alen BreatheSmart 45i
#16 of 22 in medium · #38 of 49 overall · all Alen models
2.9
Medium Alen with the same quiet motor; lifetime warranty with filter subscription.
245 cfmsmoke CADR
380 sq ftAHAM room size
49 dBat full speed
50 Wmax power
$349street price, being verified
One air change of a 300 sq ft room in about 10 min$79 a year in filters$744 to own for 5 yearsAHAM Verifide CADR
Ratings
Includes independent measurements from HouseFresh.
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 2.9. Formula and weights.
Specifications
- Smoke CADR
- 245 cfm
- Dust CADR
- 245 cfm
- Pollen CADR
- 245 cfm
- AHAM room size
- 380 sq ft
- Maker's room size
- 800 sq ft
- Max power
- 50 W
- Noise (low / high)
- 24 / 49 dB
- Filter cost
- $79
- Filter life
- 12 months
- Filters per year
- $79
- 5-year cost of ownership
- $744
- True HEPA
- Yes
- Activated carbon
- 0.3 lb
- Auto mode (PM2.5 sensor)
- Yes
- App
- Yes
- Washable prefilter
- No
- AHAM Verifide
- Yes
- Energy Star
- Yes
- Weight
- 15.0 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 (4 of 4). 36 min at speed 3; 48 min at speed 2; 144 min at speed 1 | 30 min | HouseFresh 2025-12 |
| Measured CADR HouseFresh estimated PM1 CADR from 728 cu ft decay test at top speed; not an AHAM lab test. 165 cfm at speed 3; 122 cfm at speed 2. Page cites AHAM dust CADR as 207.9 cfm | 198 cfm | HouseFresh 2025-12 |
| Measured CADR, % of rated 198 cfm HouseFresh PM1 CADR vs 245 cfm rated smoke CADR | 80.8 % | HouseFresh 2025-12 |
| Noise, measured speed 1 of 4 (lowest); 3 ft | 36.2 dBA | HouseFresh 2025-12 |
| Noise, measured speed 4 of 4 (top); 3 ft | 56.1 dBA | HouseFresh 2025-12 |
| Power draw, measured speed 4 of 4 (top); ionizer off (38.7 W with ionizer on) | 38.5 W | HouseFresh 2025-12 |
How it compares with its neighbors
| # | Model | Smoke CADR | Dust | Pollen | W | dB max | Filters/yr | $/CADR | Score |
|---|---|---|---|---|---|---|---|---|---|
| 13 | Alen BreatheSmart FLEX | 240 | 240 | 240 | 50 | 50 | $69 | 1.2 | 3.0 |
| 14 | Coway Airmega 100 | 148 | 150 | 150 | 23 | 57 | $40 | 0.9 | 3.0 |
| 15 | Medify MA-25 | 230 | 230 | 230 | 55 | 55 | $100 | 0.4 | 3.0 |
| 16 | Alen BreatheSmart 45i | 245 | 245 | 245 | 50 | 49 | $79 | 1.4 | 2.9 |
| 17 | Clorox Large Room 11010 | 206 | 219 | 232 | 65 | 54 | $100 | 0.7 | 2.8 |
| 18 | Honeywell HPA200 | 190 | 200 | 180 | 95 | 58 | $50 | 0.7 | 2.8 |
| 19 | Clorox Medium Room 11030 | 150 | 160 | 155 | 45 | 50 | $80 | 0.7 | 2.7 |