Model
Frigidaire FDEX21E4EW
Rank #374 means 373 of the 615 clothes dryer models we track cost less to run each year; the 80th efficiency percentile means it uses less energy for its size than 80% of those models.
What does the Frigidaire FDEX21E4EW cost to run per year?
The Frigidaire FDEX21E4EW is a relatively costly runner for its class: about $113 a year, rank #374 of 615. Once capacity is factored in, it outperforms 80% of the clothes dryer models we track on efficiency, not just on headline running cost. The CEF figure of 3.93 on this model captures combined energy factor, the main efficiency lever ENERGY STAR tracks for this class.
Immediately around it on the leaderboard, the Ge GFV55ES*N*** at $113/yr runs a little cheaper and the Whirlpool WED8127L** 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 Frigidaire FDEX21E4EW's $113/yr adds up to roughly $1469 in electricity alone, before purchase price or repairs.
Also sold as: Crosley CFDMHE8105AW.
By the numbers
The Frigidaire FDEX21E4EW 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 Frigidaire FDEX21E4EW adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Frigidaire FDEX21E4EW 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 Frigidaire FDEX21E4EW 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 8 cu ft, the Frigidaire FDEX21E4EW is a large clothes dryer for its class, which spans 3.8 to 9.2 cu ft with a median of 7.4 cu ft, size is usually the single biggest lever behind a running-cost figure, and at this end of the range there is more capacity to service, which tends to push the number up. Its CEF of 3.93, above the class median of 3.93, reflects combined 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.
- Heat source and Combined Energy Factor (CEF). CEF combines drying performance with standby and off-mode energy use; for a given drum size, a higher CEF means less energy per pound of laundry dried, and heat-pump models usually post the highest figures in the class.
- Drum capacity. Drum capacity sets how much laundry one cycle can hold, and heating a bigger volume of air generally costs more energy per cycle.
Common questions
Is the Frigidaire FDEX21E4EW cheap to run?
Not especially. At $113 a year it ranks #374 of 615 clothes dryer 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 Frigidaire FDEX21E4EW cost per month?
Roughly $9.4/mo, spreading the $113/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 608 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $113 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Frigidaire FDEX21E4EW for its size?
80th 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
| Rank | Model | Cost/yr |
|---|---|---|
| 315 | Ge GFV55ES*N***7.8 cu ft | $113 |
| 314 | Ge GFD55ES*N***7.8 cu ft | $113 |
| 313 | Samsung DVE45T6005*7.5 cu ft | $113 |
| 312 | Samsung DVE45T61***7.5 cu ft | $113 |
| 311 | Samsung DVE45T70***7.4 cu ft | $113 |
Source
ES_1021080_FDEX21E4EW_06082020171542_6542906View certified clothes dryer listingsENERGY STAR data as of July 2026Frigidaire and FDEX21E4EW 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.