ByTheRank

Best 50-pint dehumidifiers, ranked by certified efficiency and capacity

Updated 2026-11-01 · 10 products compared on 3 measured criteria

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.

The 50-pint class is the most popular dehumidifier size for basements and large damp rooms. These 10 models have the highest certified efficiency among 168 portable ENERGY STAR dehumidifiers certified at 45 to 55 pints per day (data retrieved 2026-11-01). The MegaLight PD-HPC750-WT scores highest overall.

The ranking at a glance

#ProductScoreEfficiency (IEF)CapacityAnnual energy use
1MegaLight PD-HPC750-WT97.62.2 L/kWh49.43 pints/day472 kWh/yr
2Waykar CTH150B97.62.2 L/kWh49.43 pints/day471 kWh/yr
3Vellgoo TAURUS PRO-RCS50(Y)-N4-3-25972.24 L/kWh45 pints/day444 kWh/yr
4ZAFRO D026W-50Pt3M96.72.2 L/kWh49.86 pints/day504 kWh/yr
5AERIC AERD501P94.22.1 L/kWh49.32 pints/day502 kWh/yr
6Midea MDUDMB-50AEN8-BB0F93.52.08 L/kWh49.67 pints/day515 kWh/yr
7Greenlite GL-DEH50R3292.32.04 L/kWh49.95 pints/day529 kWh/yr
8AVAHUM AM16091.82.02 L/kWh49.83 pints/day530 kWh/yr
9Airzentti ACD155P-PG10091.82.02 L/kWh49.83 pints/day530 kWh/yr
10MOISWELL Defender M7091.82.02 L/kWh49.83 pints/day530 kWh/yr

The products

1. MegaLight PD-HPC750-WT

Best for: the lowest cost per pint removed · Score 97.6/100
Pros
  • Efficiency (IEF): 2.2 L/kWh (#2 of 10 here)
  • Annual energy use: 472 kWh/yr (#3 of 10 here)
Cons
  • Capacity: 49.43 pints/day (#5 of 10 here)
Specs: ENERGY STAR certified Dehumidifiers dataset (U.S. EPA, data.energystar.gov mgiu-hu4z), record 4586106, retrieved 2026-11-01
Find it on Amazon

2. Waykar CTH150B

Best for: the lowest cost per pint removed · Score 97.6/100
Pros
  • Efficiency (IEF): 2.2 L/kWh (#2 of 10 here)
  • Annual energy use: 471 kWh/yr (#2 of 10 here)
  • Same certified specs also sold as Waykar CTH150D, Waykar CTH150PB, Waykar CTH150PD
Cons
  • Capacity: 49.43 pints/day (#5 of 10 here)
Specs: ENERGY STAR certified Dehumidifiers dataset (U.S. EPA, data.energystar.gov mgiu-hu4z), record 4005790, retrieved 2026-11-01
Find it on Amazon

3. Vellgoo TAURUS PRO-RCS50(Y)-N4-3-25

Best for: the lowest cost per pint removed · Score 97/100
Pros
  • Efficiency (IEF): 2.24 L/kWh (#1 of 10 here)
  • Annual energy use: 444 kWh/yr (#1 of 10 here)
Cons
  • Capacity: 45 pints/day (#7 of 10 here)
Specs: ENERGY STAR certified Dehumidifiers dataset (U.S. EPA, data.energystar.gov mgiu-hu4z), record 4481295, retrieved 2026-11-01
Find it on Amazon

4. ZAFRO D026W-50Pt3M

Best for: the lowest cost per pint removed · Score 96.7/100
Pros
  • Efficiency (IEF): 2.2 L/kWh (#2 of 10 here)
  • Capacity: 49.86 pints/day (#2 of 10 here)
Cons
  • Annual energy use: 504 kWh/yr (#5 of 10 here)
Specs: ENERGY STAR certified Dehumidifiers dataset (U.S. EPA, data.energystar.gov mgiu-hu4z), record 4623714, retrieved 2026-11-01
Find it on Amazon

5. AERIC AERD501P

Best for: the lowest cost per pint removed · Score 94.2/100
Pros
  • Efficiency (IEF): 2.1 L/kWh (#3 of 10 here)
  • Same certified specs also sold as AERIC AERD501PF
Cons
  • Capacity: 49.32 pints/day (#6 of 10 here)
Specs: ENERGY STAR certified Dehumidifiers dataset (U.S. EPA, data.energystar.gov mgiu-hu4z), record 4005876, retrieved 2026-11-01
Find it on Amazon

6. Midea MDUDMB-50AEN8-BB0F

Best for: the lowest cost per pint removed · Score 93.5/100
Pros
  • Capacity: 49.67 pints/day (#4 of 10 here)
Cons
  • Annual energy use: 515 kWh/yr (#6 of 10 here)
Specs: ENERGY STAR certified Dehumidifiers dataset (U.S. EPA, data.energystar.gov mgiu-hu4z), record 4439456, retrieved 2026-11-01
Find it on Amazon

7. Greenlite GL-DEH50R32

Best for: the lowest cost per pint removed · Score 92.3/100
Pros
  • Capacity: 49.95 pints/day (#1 of 10 here)
Cons
  • Efficiency (IEF): 2.04 L/kWh (#5 of 10 here)
  • Annual energy use: 529 kWh/yr (#7 of 10 here)
Specs: ENERGY STAR certified Dehumidifiers dataset (U.S. EPA, data.energystar.gov mgiu-hu4z), record 4614174, retrieved 2026-11-01
Find it on Amazon

8. AVAHUM AM160

Best for: the lowest cost per pint removed · Score 91.8/100
Pros
  • Capacity: 49.83 pints/day (#3 of 10 here)
  • Same certified specs also sold as AVAHUM AM160P
Cons
  • Efficiency (IEF): 2.02 L/kWh (#6 of 10 here)
  • Annual energy use: 530 kWh/yr (#8 of 10 here)
Specs: ENERGY STAR certified Dehumidifiers dataset (U.S. EPA, data.energystar.gov mgiu-hu4z), record 4520244, retrieved 2026-11-01
Find it on Amazon

9. Airzentti ACD155P-PG100

Best for: the lowest cost per pint removed · Score 91.8/100
Pros
  • Capacity: 49.83 pints/day (#3 of 10 here)
Cons
  • Efficiency (IEF): 2.02 L/kWh (#6 of 10 here)
  • Annual energy use: 530 kWh/yr (#8 of 10 here)
Specs: ENERGY STAR certified Dehumidifiers dataset (U.S. EPA, data.energystar.gov mgiu-hu4z), record 4511313, retrieved 2026-11-01
Find it on Amazon

10. MOISWELL Defender M70

Best for: the lowest cost per pint removed · Score 91.8/100
Pros
  • Capacity: 49.83 pints/day (#3 of 10 here)
  • Same certified specs also sold as MOISWELL Defender H150, MOISWELL Defender HP150, MOISWELL Defender M145, MOISWELL Defender MP145, MOISWELL Defender MP70
Cons
  • Efficiency (IEF): 2.02 L/kWh (#6 of 10 here)
  • Annual energy use: 530 kWh/yr (#8 of 10 here)
Specs: ENERGY STAR certified Dehumidifiers dataset (U.S. EPA, data.energystar.gov mgiu-hu4z), record 4520481, retrieved 2026-11-01
Find it on Amazon

How this ranking is scored

We took portable ENERGY STAR dehumidifiers certified at 45 to 55 pints per day (the '50-pint' class under the current DOE test) and compared the 10 most efficient.

Each number is scored against the best on this page (best = 100%; e.g. 90% of the best capacity = 0.9) and multiplied by its weight; the total is out of 100. Full method.

FAQ

Why do some '50-pint' units show fewer pints?

The U.S. DOE test changed in 2019 to cooler, more realistic conditions; many units marketed under the old 70-pint rating certify at about 50 pints now. This page uses the current certified figure.

What is IEF?

Integrated Energy Factor: liters removed per kWh including standby power. Here it ranges from 2.02 to 2.24 L/kWh.

Where do these numbers come from?

From the U.S. EPA ENERGY STAR certified Dehumidifiers dataset (retrieved 2026-11-01). We rank the certified results; we did not run our own tests.

Sources