What the Whirlpool WHAD251AW costs to run
At 283 kWh/yr, the Whirlpool WHAD251AW's ENERGY STAR certification puts it one of the cheaper models in its category to run against every other certified dehumidifier.
That $53 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.
How the Whirlpool WHAD251AW compares to other dehumidifiers
Against the category average of 378 kWh/yr, this model uses 25.1% less, ranking 180 of 546 dehumidifiers tracked here for running cost. 546 certified dehumidifiers, one average, about $18/year of daylight between it and this model; the full methodology has the rest.
Neighbouring models
Right next to the Whirlpool WHAD251AW on that list: Waykar CTH80D ($53/yr, 283 kWh/yr) runs slightly less, while Deciuu LIBRA-RCS25(Y)-N4-3(B)-25 ($53/yr, 284 kWh/yr) runs slightly more.
Same brand, different models
Of the 4 ENERGY STAR certified dehumidifiers Whirlpool makes, the WHAD251AW is the cheapest to run, $46/year less than Whirlpool's priciest, the WHHD501PAW.
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.
Shopping for a new one
Efficient as certified dehumidifiers go, $53/year is a reasonable baseline if you're comparing what else is on the market.
Worth comparing a few current certified models before deciding.
If you're keeping it
At $53/year just to run, a dehumidifier is worth protecting against an unplanned repair bill on top of that.
How this was checked
The full Dehumidifier category page shows all 546 dehumidifiers ranked by cost; the state-rate guide covers the half of this number that isn't the appliance. The 283 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.