Model
Midea MDUDMA-20AEN8-BA7
Rank #75 means 74 of the 519 dehumidifier models we track cost less to run each year; the 14th efficiency percentile means it uses less energy for its size than 14% of those models.
What does the Midea MDUDMA-20AEN8-BA7 cost to run per year?
The Midea MDUDMA-20AEN8-BA7 holds rank #75 of 519 on running cost, at about $46 a year, a genuinely cheap result for the class. Size-adjusted, this model ranks near the bottom of its class on efficiency, ahead of just 14% of dehumidifier models we track. At a IEF of 1.7, its integrated energy factor is the single figure that best explains how it earns its running-cost number.
Immediately around it on the leaderboard, the Midea MC20MSWBA3RCM at $46/yr runs a little cheaper and the Deye DYD-P30 at $48/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A dehumidifier typically stays in service for somewhere around 8 years; over that span, the Midea MDUDMA-20AEN8-BA7's $46/yr adds up to roughly $368 in electricity alone, before purchase price or repairs.
Also sold as: Midea MAD20S1QWT.
By the numbers
The Midea MDUDMA-20AEN8-BA7 normalized against its whole class, so each figure means something.
What it costs you over time
Running cost is an every-year number, so it compounds. At $46/yr, here is what the Midea MDUDMA-20AEN8-BA7 adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Midea MDUDMA-20AEN8-BA7 costs about $460. That is roughly $180 less than the class median, which would run closer to $640 over the same ten years.
How the Midea MDUDMA-20AEN8-BA7 compares
The dehumidifier class we track runs from $19 to $521 a year. At $46/yr, it runs about $18 a year cheaper than the class median of $64, and it is about $27 a year more than the cheapest dehumidifier to run at $19.
What drives its running cost
At 20.16 pints/day, the Midea MDUDMA-20AEN8-BA7 is a small dehumidifier for its class, which spans 1.91 to 172.13 pints/day with a median of 32.46 pints/day, at the small end of the class, capacity itself is doing a lot of the work to keep that figure down, separate from how efficient the unit actually is. The IEF of 1.7 on this model, below the class median of 2.01, measures integrated energy factor; it is the number to compare directly against another model's IEF if capacity is similar.
- Integrated Energy Factor (IEF). IEF measures liters of water removed per kilowatt-hour; a higher IEF means less energy per pint of moisture removed for a given capacity.
- Water removal capacity (pints/day). A dehumidifier rated to remove more pints per day is built for a larger space or a more humid room, and generally draws more power to do it.
- Humidistat accuracy. A unit with a more precise humidistat cycles the compressor off once the target humidity is reached, rather than running continuously.
Common questions
Is the Midea MDUDMA-20AEN8-BA7 cheap to run?
Yes. Its $46/yr running cost puts it at rank #75 of 519, below what most dehumidifier models we track cost to run.
How much does the Midea MDUDMA-20AEN8-BA7 cost per month?
About $3.85 a month, which is the $46 annual estimate spread across twelve months at the US average rate of $0.1856/kWh. Your own bill scales with your local electricity rate and how heavily you use it.
How is this running-cost figure calculated?
The formula is annual kWh times price per kWh: 249 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $46 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Midea MDUDMA-20AEN8-BA7 for its size?
14th percentile once size is factored in. That means its size-adjusted efficiency is not the main reason for the running-cost figure above; its capacity plays a large role too.
Cheaper to run in the same class
Source
ES_1138537_MDUDMA-20AEN8-BA7_101220220735747_5022272View certified dehumidifier listingsENERGY STAR data as of July 2026Midea and MDUDMA-20AEN8-BA7 are used here for identification only and are not endorsements. Figures are computed by WattWise Labs from public ENERGY STAR data, not measured in our own lab.