Model
Whirlpool WED6620H**
Rank #299 means 298 of the 615 clothes dryer models we track cost less to run each year; the 50th efficiency percentile means it uses less energy for its size than 50% of those models.
What does the Whirlpool WED6620H** cost to run per year?
The Whirlpool WED6620H** holds rank #299 of 615 on running cost, at about $113 a year, an unremarkable but typical figure for the class. Its size-adjusted efficiency percentile of 50 lands in the middle of the pack once capacity is accounted for. At a CEF of 3.93, its combined energy factor is the single figure that best explains how it earns its running-cost number.
Immediately around it on the leaderboard, the Whirlpool WED5620H** at $113/yr runs a little cheaper and the Whirlpool WED8620H** at $113/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A clothes dryer typically stays in service for somewhere around 13 years; over that span, the Whirlpool WED6620H**'s $113/yr adds up to roughly $1469 in electricity alone, before purchase price or repairs.
Also sold as: Amana NED5800H**.
By the numbers
The Whirlpool WED6620H** 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 $113/yr, here is what the Whirlpool WED6620H** adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Whirlpool WED6620H** costs about $1130. That is roughly $0 less than the class median, which would run closer to $1130 over the same ten years.
How the Whirlpool WED6620H** compares
The clothes dryer class we track runs from $23 to $128 a year. At $113/yr, it sits right on the class median of $113, and it is about $90 a year more than the cheapest clothes dryer to run at $23.
What drives its running cost
At 7.4 cu ft, the Whirlpool WED6620H** is a small clothes dryer for its class, which spans 3.8 to 9.2 cu ft with a median of 7.4 cu ft, less capacity to service is usually the first reason a running-cost figure lands on the low side, before efficiency even enters the picture. Beyond size, its CEF of 3.93, above the class median of 3.93, is the class's own efficiency yardstick, combined energy factor, and it is what separates two similarly sized models with different running costs.
- Heat source and Combined Energy Factor (CEF). Heat-pump dryers recycle heat instead of generating it fresh with a resistance coil, and typically use meaningfully less electricity per load than a conventional resistance dryer, at the cost of a longer cycle; CEF is the federal figure that captures this.
- Drum capacity. A larger drum can dry a bigger load per cycle, but it also usually needs more energy per cycle to heat the extra air volume.
Common questions
Is the Whirlpool WED6620H** cheap to run?
Roughly, yes. Its $113/yr figure is close to the class median, ranking #299 of 615, neither a bargain nor a splurge on running cost.
How much does the Whirlpool WED6620H** cost per month?
About $9.4 a month, which is the $113 annual estimate spread across twelve months at the US average rate of $0.1856/kWh. Your own bill scales with your local electricity rate and how heavily you use it.
How is this running-cost figure calculated?
The formula is annual kWh times price per kWh: 608 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $113 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Whirlpool WED6620H** for its size?
50th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 276 | Whirlpool WED5620H**7.4 cu ft | $113 |
| 275 | Electrolux EFME627****8 cu ft | $113 |
| 274 | Electrolux EFME527****8 cu ft | $113 |
| 273 | Electrolux EFME427****8 cu ft | $113 |
| 272 | Electrolux EFMC627****8 cu ft | $113 |
Source
ES_1129244_WED6620H**_10142018194427_6267487View certified clothes dryer listingsENERGY STAR data as of July 2026Whirlpool and WED6620H** 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.