Levoit LAP-C311S-WUSR vs Coway AP-1125G
A spec-only comparison using ENERGY STAR certification data. We have not tested either unit, and features like noise, filter price and build quality are not covered here.
- Cleaning speed: the Coway AP-1125G has the higher smoke CADR (185 vs 175 cfm, 6% more).
- Running cost: the Levoit LAP-C311S-WUSR uses less electricity per ENERGY STAR (132 kWh/yr), about $11.54/yr less at the U.S. average rate (estimate).
- Room size: by AHAM's 2/3 rule, up to about 262 sq ft vs 278 sq ft.
Both sit in ENERGY STAR data as Medium rooms (150–249 cfm) units by smoke CADR. Listed differences: only the Levoit LAP-C311S-WUSR is listed as connected (app/Wi-Fi); only the Coway AP-1125G lists an air-quality-sensor auto mode. Over 5 years at the U.S. average rate, the electricity difference is about $57.68 (estimate).
| Levoit LAP-C311S-WUSR | Coway AP-1125G | |
|---|---|---|
| Smoke CADR (cfm) | 175 | 185 |
| Dust CADR (cfm) | 175 | 202 |
| Pollen CADR (cfm) | 200 | 248 |
| ENERGY STAR room size | 271 sq ft | 287 sq ft |
| AHAM 2/3-rule room size | 262 sq ft | 278 sq ft |
| Annual energy | 132 kWh | 195 kWh |
| Est. electricity/yr (U.S. avg) | $24.17 | $35.70 |
| Smoke CADR per watt | 7.81 | 5.57 |
| Ozone (reported) | 0 ppb | 0 ppb |
| Technology | Fan and Filter | Fan and Filter |
| Filters listed | HEPA | HEPA-Type |
| Auto mode | None | Air Quality Sensor |
| Connected | Yes | No |
| Most Efficient | No | No |
| Source | ENERGY STAR record 4639114 | ENERGY STAR record 4577032 |
Purchase price and filter cost are not included (data gap). Electricity estimates use 18.31¢/kWh (EIA).
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See Levoit air purifiers on the manufacturer's site (plain link, not an affiliate link)
See Coway air purifiers on the manufacturer's site (plain link, not an affiliate link)