Model
Midea MC20MSWBA3RCM
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 MC20MSWBA3RCM cost to run per year?
Do the math and the Midea MC20MSWBA3RCM's $46/yr puts it at rank #75 of 519, one of the more affordable dehumidifier models we track to keep running. Normalized for capacity, it beats only 14% of dehumidifier models we track, one of the weaker efficiency results we track for the class. The IEF figure of 1.7 on this model captures integrated energy factor, the main efficiency lever ENERGY STAR tracks for this class.
Immediately around it on the leaderboard, the Midea MAD20S1QWT at $46/yr runs a little cheaper and the Midea MDUDMA-20AEN8-BA7 at $46/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 MC20MSWBA3RCM'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 MC20MSWBA3RCM 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 MC20MSWBA3RCM 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 MC20MSWBA3RCM 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 MC20MSWBA3RCM 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 MC20MSWBA3RCM is a small dehumidifier for its class, which spans 1.91 to 172.13 pints/day with a median of 32.46 pints/day, less capacity to service is usually the first reason a running-cost figure lands on the low side, before efficiency even enters the picture. 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). Two dehumidifiers rated for the same pints per day can carry very different IEF figures, and IEF is what actually separates their running costs.
- Water removal capacity (pints/day). Pints-per-day rating scales with the space it is built for, and that rating is the first driver of how much power the compressor needs.
- Humidistat accuracy. How tightly a humidistat holds its target humidity determines how much of the day the compressor actually runs, on top of the unit's rated capacity and IEF.
Common questions
Is the Midea MC20MSWBA3RCM cheap to run?
Yes, relatively. At $46 a year it ranks #75 of 519 dehumidifier models we track, in the cheaper part of its class to run.
How much does the Midea MC20MSWBA3RCM cost per month?
Roughly $3.85/mo, spreading the $46/yr estimate evenly across twelve months at $0.1856/kWh. Actual monthly bills swing with your rate and usage pattern.
How is this running-cost figure calculated?
We take the model's published annual energy use of 249 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $46 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Midea MC20MSWBA3RCM 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_MC20MSWBA3RCM_112020250549581_9531762View certified dehumidifier listingsENERGY STAR data as of July 2026Midea and MC20MSWBA3RCM 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.