Model
Lg DLE7400*E
Rank #179 means 178 of the 615 clothes dryer models we track cost less to run each year; the 37th efficiency percentile means it uses less energy for its size than 37% of those models.
What does the Lg DLE7400*E cost to run per year?
Ranking #179 of 615, the Lg DLE7400*E is in the cheaper half of its class to run, at about $113 a year. Adjusted for size, it is only more efficient than 37% of clothes dryer models we track, so part of its running cost comes from its capacity rather than efficiency alone. At a CEF of 3.94, 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 Lg WKE100H*A at $113/yr runs a little cheaper and the Lg DLEX8900* 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 Lg DLE7400*E's $113/yr adds up to roughly $1469 in electricity alone, before purchase price or repairs.
Also sold as: Lg DLE6100*.
By the numbers
The Lg DLE7400*E 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 Lg DLE7400*E adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Lg DLE7400*E 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 Lg DLE7400*E 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 7.3 cu ft, the Lg DLE7400*E 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. Its CEF of 3.94, 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 Lg DLE7400*E cheap to run?
Yes, relatively. At $113 a year it ranks #179 of 615 clothes dryer models we track, in the cheaper part of its class to run.
How much does the Lg DLE7400*E cost per month?
Roughly $9.39/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 607 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 Lg DLE7400*E for its size?
37th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 169 | Lg WKE100H*A7.4 cu ft | $113 |
| 168 | Lg DLE7000*7.3 cu ft | $113 |
| 167 | Lg DLEX3850*7.4 cu ft | $113 |
| 166 | Lg DLE3450*7.4 cu ft | $113 |
| 165 | Lg WSEX200H*A7.4 cu ft | $113 |
Source
ES_1118034_DLE7400*E_11022021073118_80105370View certified clothes dryer listingsENERGY STAR data as of July 2026Lg and DLE7400*E 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.