Dreo DR-HTF022S: CADR, room size and running cost
Smoke CADR 90 cfm · Room size 140 sq ft (ENERGY STAR) · 102 kWh/yr ≈ $18.68/yr electricity (estimate)
Certified specs
| Smoke CADR | 90 cfm |
|---|---|
| Dust CADR | 98 cfm |
| Pollen CADR | 104 cfm |
| PM2.5 CADR | 94 cfm |
| ENERGY STAR effective room size | 140 sq ft (1.55 × smoke CADR, per 10 CFR 429.68) |
| Annual energy use | 102 kWh/yr |
| Integrated energy factor | 4.8 cfm/W |
| Smoke CADR per watt | 5.59 cfm/W |
| Ozone emissions (reported) | 0 ppb |
| Technology | Fan and Filter |
| Filter types listed | HEPA-Type |
| Automatic mode | None |
| Connected (app/Wi-Fi) | Yes (Wi-Fi) |
| ENERGY STAR Most Efficient | No |
| Markets | United States, Canada |
| Date certified | 2026-09-01 |
| ENERGY STAR partner | Hesung Innovation Corp |
| Other model numbers ENERGY STAR lists as equivalent | DR-HTF022AS; DWTF22AS; DWTF22S |
| Source | ENERGY STAR record 4698194 (also listed as record(s) 4698214) · 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 | 6.8 | 6.0 | Meets AHAM 2/3 rule |
| 150 sq ft | 4.5 | 4.0 | Below AHAM 2/3 rule |
| 200 sq ft | 3.4 | 3.0 | Below AHAM 2/3 rule |
| 300 sq ft | 2.2 | 2.0 | Below AHAM 2/3 rule |
| 400 sq ft | 1.7 | 1.5 | Below AHAM 2/3 rule |
| 500 sq ft | 1.4 | 1.2 | 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 135 sq ft.
Estimated yearly electricity cost
| Where | Residential rate | Per year | Per month |
|---|---|---|---|
| Louisiana | 12.72¢ | $12.97 | $1.08 |
| U.S. average | 18.31¢ | $18.68 | $1.56 |
| California | 33.61¢ | $34.28 | $2.86 |
| Hawaii | 48.00¢ | $48.96 | $4.08 |
Estimate = 102 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 4612522000 | 82 | 127 | 30 | $5.49 |
| Blueair 3131000100 | 80 | 124 | 43.67 | $8.00 |
| Blueair Pure 411 | 98 | 152 | 64 | $11.72 |
| Blueair 1831022000 | 90 | 140 | 75 | $13.73 |
| Alen BreatheSmart 25i | 97 | 150 | 90 | $16.48 |
| Levoit LAP-B851S-WNA | 85 | 132 | 90 | $16.48 |
| 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 Dreo models
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We have not tested this product. Figures are as listed in ENERGY STAR data retrieved 2026-10-17.