Model
Lg LDP679#**
Rank #305 means 304 of the 709 dishwasher models we track cost less to run each year; the 68th efficiency percentile means it uses less energy for its size than 68% of those models.
What does the Lg LDP679#** cost to run per year?
At $44 a year to run, the Lg LDP679#** sits close to the middle of its class on cost, ranking #305 of 709 dishwasher models we track. It uses 22.5% less energy than the U.S. federal standard model in its class, which would cost about $57/yr to run, a saving of roughly $13 a year. Its 68th size-adjusted efficiency percentile is a step ahead of the class median, though not among the very top results. At 15 place settings, it is a mid-size dishwasher for the class, which runs 2 to 18 place settings; size and efficiency are the two levers behind the figure above, and this dataset does not carry a separate efficiency-factor column for this class.
Immediately around it on the leaderboard, the Lg LDFN454** at $44/yr runs a little cheaper and the Lg LDP681*** at $44/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A dishwasher typically stays in service for somewhere around 9 years; over that span, the Lg LDP679#**'s $44/yr adds up to roughly $396 in electricity alone, before purchase price or repairs.
Also sold as: Lg SDWB24**.
By the numbers
The Lg LDP679#** 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 $44/yr, here is what the Lg LDP679#** 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 LDP679#** costs about $440. That is roughly $130 less than a standard model in its class, which would run closer to $570 over the same ten years.
How the Lg LDP679#** compares
The dishwasher class we track runs from $15 to $45 a year. At $44/yr, it sits right on the class median of $44, and it is about $29 a year more than the cheapest dishwasher to run at $15. Against the US federal standard model for its class at about $57/yr, the Lg LDP679#** uses 22.5% less energy.
What drives its running cost
At 15 place settings, the Lg LDP679#** is a mid-size dishwasher for its class, which spans 2 to 18 place settings with a median of 14 place settings, putting it squarely in the middle of the class on the size lever that drives most of the cost.
- Place-setting capacity. A larger dishwasher heats more water per cycle, so bigger capacity generally means a higher annual energy figure, independent of how efficient the unit is.
- Water heating. The booster heater that brings water up to sanitizing temperature is usually the single largest electrical load in a dishwasher's cycle.
- Cycle length and drying method. Cycle selection, eco versus heavy, air-dry versus heated-dry, moves real running cost more than most owners realize for a given capacity.
Common questions
Is the Lg LDP679#** cheap to run?
It is about average. At $44 a year it ranks #305 of 709 dishwasher models we track, close to the middle of its class on running cost.
How much does the Lg LDP679#** cost per month?
Roughly $3.68/mo, spreading the $44/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 238 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $44 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Lg LDP679#** for its size?
68th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 292 | Lg LDFN454**15 place settings | $44 |
| 291 | Lg LDFN343**15 place settings | $44 |
| 290 | Lg LDFC353**15 place settings | $44 |
| 289 | Lg LDFC242**15 place settings | $44 |
| 288 | Lg LDF554#**15 place settings | $44 |
Source
ES_1118034_LDP679#**_06232023121509_80172922View certified dishwasher listingsENERGY STAR data as of July 2026Lg and LDP679#** 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.