Model
Midea MAD50S1QWT-A
Rank #389 means 388 of the 519 dehumidifier models we track cost less to run each year; the 78th efficiency percentile means it uses less energy for its size than 78% of those models.
What does the Midea MAD50S1QWT-A cost to run per year?
At $96 a year to run, the Midea MAD50S1QWT-A runs more expensively than most models in its class, ranking #389 of 519 dehumidifier models we track. Its 78th size-adjusted efficiency percentile is a step ahead of the class median, though not among the very top results. The IEF figure of 2.01 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 MAD50PS1QWT-A at $96/yr runs a little cheaper and the Midea MDUDMB-50AEN8-BB0BF at $96/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 MAD50S1QWT-A's $96/yr adds up to roughly $768 in electricity alone, before purchase price or repairs.
Also sold as: Midea MAD50PS1BQGR.
By the numbers
The Midea MAD50S1QWT-A 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 $96/yr, here is what the Midea MAD50S1QWT-A 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 MAD50S1QWT-A costs about $960. That is roughly $320 more than the class median, which would run closer to $640 over the same ten years.
How the Midea MAD50S1QWT-A compares
The dehumidifier class we track runs from $19 to $521 a year. At $96/yr, it runs about $32 a year above the class median of $64, and it is about $77 a year more than the cheapest dehumidifier to run at $19.
What drives its running cost
At 49.67 pints/day, the Midea MAD50S1QWT-A is a large dehumidifier for its class, which spans 1.91 to 172.13 pints/day with a median of 32.46 pints/day, among dehumidifier models, bigger capacity is the most common reason a running-cost figure lands on the high side, all else being equal. 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). 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 MAD50S1QWT-A cheap to run?
Not especially. At $96 a year it ranks #389 of 519 dehumidifier models we track, in the pricier part of its class to run, though its size and features may still justify that for your needs.
How much does the Midea MAD50S1QWT-A cost per month?
Roughly $7.97/mo, spreading the $96/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 515 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $96 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Midea MAD50S1QWT-A for its size?
78th 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_MAD50S1QWT-A_102020250626700_6647488View certified dehumidifier listingsENERGY STAR data as of July 2026Midea and MAD50S1QWT-A 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.