Running cost for the Whirlpool WHHD501PAW
The Whirlpool WHHD501PAW is certified by ENERGY STAR at 530 kWh a year, one of the more expensive models in its category to run among dehumidifiers currently certified.
The $100 figure above uses the simple average of all 51 published state rates. Pick your state for the real number.
Whirlpool WHHD501PAW against the category
That's 40.2% above the dehumidifier category average of 378 kWh/yr, and ranks 524 of 546 certified dehumidifiers for annual running cost, 1 being cheapest. The category average comes from every dehumidifier ENERGY STAR currently certifies (546 models), not an outside benchmark, about $29/year above that average at the national rate. See the methodology page.
What sits beside it in the ranking
Honeywell Home DHM090R4000 ($105/yr, 556 kWh/yr) costs a little more to run than the Whirlpool WHHD501PAW. Whirlpool WHHD501AW ($100/yr, 530 kWh/yr) costs a little less.
Within the Whirlpool lineup
Among Whirlpool's 4 certified dehumidifiers, this is the priciest to run, $46/year over the WHAD251AW, the brand's cheapest.
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?
The Whirlpool WHHD501PAW runs above its category average. If the dehumidifier you actually own is older still, likely well past ENERGY STAR's efficiency baseline when it was made, a current certified model could cost meaningfully less than this model's $100/year every year.
Worth comparing a few current certified models before deciding.
Protecting what you have
Whether or not the Whirlpool WHHD501PAW ever needs replacing, a repair is the more common failure for a dehumidifier, one a protection plan budgets for ahead of time.
Sourcing
Ranked 524 of 546, the Whirlpool WHHD501PAW 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 530 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.