Running cost for the Midea MAD50S1OWWCM
ENERGY STAR certifies the Midea MAD50S1OWWCM at 520 kWh/yr, one of the more expensive models in its category to run for its category.
That $98 is priced at 18.8¢/kWh, the average of all 51 state rates this site tracks. Your own state's rate is one click away.
Efficient, or not, for a dehumidifier
The category average is 378 kWh/yr; this model runs 37.6% above it, ranking 448 of 546 dehumidifiers tracked here for running cost. That average is drawn from all 546 dehumidifiers ENERGY STAR currently certifies, not an outside number, a $27/year gap from this model at the national rate. Full sourcing is in the sourcing notes.
Right next to it on the list
A rank or two either side of the Midea MAD50S1OWWCM: Midea MAD50PS1CWBL ($98/yr, 520 kWh/yr), then Midea MDUDA-50AEN8-BB0BF ($98/yr, 520 kWh/yr).
Comparing Midea's own models
Ranked 40 of Midea's 44 certified dehumidifiers, this sits between the MAD20S1QWT ($47/yr, the brand's cheapest) and the MDUDP-50AEN8-BB0 ($99/yr, its priciest).
Lifespan
NAHB's Study of Life Expectancy of Home Components does not publish a figure for dehumidifiers, so no lifetime cost is shown here rather than a guessed one. The annual and monthly figures above stand on their own.
Is it worth replacing?
At $98/year, this is on the expensive side for a dehumidifier; the cheapest certified model in this category runs about $20/year, worth knowing before buying either the Midea MAD50S1OWWCM or its replacement.
Worth comparing a few current certified models before deciding.
If you're keeping it
Whether or not the Midea MAD50S1OWWCM ever needs replacing, a repair is the more common failure for a dehumidifier, one a protection plan budgets for ahead of time.
Where this number comes from
Ranked 448 of 546, the Midea MAD50S1OWWCM sits in the middle of the dehumidifier category, see the guide to why your state changes this number for the other half of the math. The 520 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.