The most energy-efficient dehumidifiers, ranked by certified efficiency
We may earn a commission when you buy through links on this site, at no extra cost to you. It never changes a score. Disclosure.
A dehumidifier can run for months, so efficiency decides what it costs you. These 10 portable models have the highest certified Integrated Energy Factor among 547 ENERGY STAR portable dehumidifiers (data retrieved 2026-11-01), from 2.09 to 2.24 liters per kWh. The MegaLight PD-HPC750-WT scores highest overall.
The ranking at a glance
| # | Product | Score | Efficiency (IEF) | Capacity | Annual energy use |
|---|---|---|---|---|---|
| 1 | MegaLight PD-HPC750-WT | 94.4 | 2.2 L/kWh | 49.43 pints/day | 472 kWh/yr |
| 2 | Waykar CTH150B | 94.4 | 2.2 L/kWh | 49.43 pints/day | 471 kWh/yr |
| 3 | ZAFRO D026W-50Pt3M | 94 | 2.2 L/kWh | 49.86 pints/day | 504 kWh/yr |
| 4 | Vellgoo TAURUS PRO-RCS50(Y)-N4-3-25 | 93.4 | 2.24 L/kWh | 45 pints/day | 444 kWh/yr |
| 5 | Aeocky LEO PRO-RCS50(Y)-N4-3(B)-25 | 92.7 | 2.21 L/kWh | 44.94 pints/day | 438 kWh/yr |
| 6 | Aeocky RHEA PRO-RCS50(Y)-N4-3-25 | 92.5 | 2.21 L/kWh | 44.34 pints/day | 432 kWh/yr |
| 7 | AERIC AERD501P | 91.2 | 2.1 L/kWh | 49.32 pints/day | 502 kWh/yr |
| 8 | Arecovas AR-DF005 | 86.9 | 2.15 L/kWh | 32 pints/day | 338 kWh/yr |
| 9 | Deciuu LIBRA-RCS32(Y)-N4-3 | 86.6 | 2.13 L/kWh | 32 pints/day | 334 kWh/yr |
| 10 | Aeocky LEO-RCS32(Y)-N4-3 | 85.5 | 2.09 L/kWh | 32 pints/day | 336 kWh/yr |
The products
1. MegaLight PD-HPC750-WT
- Efficiency (IEF): 2.2 L/kWh (#3 of 10 here)
- Capacity: 49.43 pints/day (#2 of 10 here)
- Annual energy use: 472 kWh/yr (#8 of 10 here)
2. Waykar CTH150B
- Efficiency (IEF): 2.2 L/kWh (#3 of 10 here)
- Capacity: 49.43 pints/day (#2 of 10 here)
- Same certified specs also sold as Waykar CTH150D, Waykar CTH150PB, Waykar CTH150PD
- Annual energy use: 471 kWh/yr (#7 of 10 here)
3. ZAFRO D026W-50Pt3M
- Efficiency (IEF): 2.2 L/kWh (#3 of 10 here)
- Capacity: 49.86 pints/day (#1 of 10 here)
- Annual energy use: 504 kWh/yr (#10 of 10 here)
4. Vellgoo TAURUS PRO-RCS50(Y)-N4-3-25
- Efficiency (IEF): 2.24 L/kWh (#1 of 10 here)
- Annual energy use: 444 kWh/yr (#6 of 10 here)
5. Aeocky LEO PRO-RCS50(Y)-N4-3(B)-25
- Efficiency (IEF): 2.21 L/kWh (#2 of 10 here)
- Capacity: 44.94 pints/day (#5 of 10 here)
6. Aeocky RHEA PRO-RCS50(Y)-N4-3-25
- Efficiency (IEF): 2.21 L/kWh (#2 of 10 here)
- Capacity: 44.34 pints/day (#6 of 10 here)
7. AERIC AERD501P
- Capacity: 49.32 pints/day (#3 of 10 here)
- Same certified specs also sold as AERIC AERD501PF
- Efficiency (IEF): 2.1 L/kWh (#6 of 10 here)
- Annual energy use: 502 kWh/yr (#9 of 10 here)
8. Arecovas AR-DF005
- Annual energy use: 338 kWh/yr (#3 of 10 here)
- Capacity: 32 pints/day (#7 of 10 here)
9. Deciuu LIBRA-RCS32(Y)-N4-3
- Annual energy use: 334 kWh/yr (#1 of 10 here)
- Capacity: 32 pints/day (#7 of 10 here)
10. Aeocky LEO-RCS32(Y)-N4-3
- Annual energy use: 336 kWh/yr (#2 of 10 here)
- Efficiency (IEF): 2.09 L/kWh (#7 of 10 here)
- Capacity: 32 pints/day (#7 of 10 here)
How this ranking is scored
We took the 10 portable ENERGY STAR dehumidifiers with the highest certified Integrated Energy Factor (IEF) and scored them on efficiency, capacity and yearly energy use.
- Efficiency (IEF) (55%): liters of water removed per kWh; higher means a lower power bill for the same dryness (higher is better)
- Capacity (30%): certified water removal per day under the DOE test (higher is better)
- Annual energy use (15%): the certified yearly electricity use (lower is better)
FAQ
What is IEF?
Integrated Energy Factor: liters of water removed per kilowatt-hour, including standby power, measured under the U.S. DOE test procedure. Higher is better.
Is a bigger dehumidifier less efficient?
Not necessarily. On this list capacity ranges from 32 to 49.86 pints per day; compare IEF directly.
Where do the numbers come from?
From the U.S. EPA ENERGY STAR certified dehumidifier dataset. We rank the certified results; we did not run our own tests.