Model
Midea MDUDA-50AEN8-BB0F
Rank #386 means 385 of the 519 dehumidifier models we track cost less to run each year; the 84th efficiency percentile means it uses less energy for its size than 84% of those models.
What does the Midea MDUDA-50AEN8-BB0F cost to run per year?
Among the 519 dehumidifier models we track, the Midea MDUDA-50AEN8-BB0F's $95/yr running cost ranks it #386, in the above-average-cost group. Few dehumidifier models we track beat it on size-adjusted efficiency; it edges out 84% of the class once capacity is normalized. At a IEF of 2.01, 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 MDA50C4AWWCM at $95/yr runs a little cheaper and the Omni Max ODA50M3WGAHW at $95/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 MDUDA-50AEN8-BB0F's $95/yr adds up to roughly $760 in electricity alone, before purchase price or repairs.
Also sold as: Black+Decker BDM50WCDA.
By the numbers
The Midea MDUDA-50AEN8-BB0F 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 $95/yr, here is what the Midea MDUDA-50AEN8-BB0F 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 MDUDA-50AEN8-BB0F costs about $950. That is roughly $310 more than the class median, which would run closer to $640 over the same ten years.
How the Midea MDUDA-50AEN8-BB0F compares
The dehumidifier class we track runs from $19 to $521 a year. At $95/yr, it runs about $31 a year above the class median of $64, and it is about $76 a year more than the cheapest dehumidifier to run at $19.
What drives its running cost
At 49.95 pints/day, the Midea MDUDA-50AEN8-BB0F is a large dehumidifier for its class, which spans 1.91 to 172.13 pints/day with a median of 32.46 pints/day, size is usually the single biggest lever behind a running-cost figure, and at this end of the range there is more capacity to service, which tends to push the number up. Its IEF of 2.01, above the class median of 2.01, reflects integrated energy factor: a higher figure means it wrings more useful work out of every kilowatt-hour, so it is the efficiency lever to weigh against raw size.
- 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 MDUDA-50AEN8-BB0F cheap to run?
Its $95/yr running cost, rank #386 of 519, is above what most dehumidifier models we track cost to run, so this is not one of the cheaper picks on electricity alone.
How much does the Midea MDUDA-50AEN8-BB0F cost per month?
About $7.92 a month, which is the $95 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: 512 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $95 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Midea MDUDA-50AEN8-BB0F for its size?
84th percentile once size is factored in. That means its size-adjusted efficiency is a real factor in the running-cost figure above; its capacity plays a large role too.
Cheaper to run in the same class
Source
ES_1138537_MDUDA-50AEN8-BB0F_06122025060058_8920368View certified dehumidifier listingsENERGY STAR data as of July 2026Midea and MDUDA-50AEN8-BB0F 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.