Model
Lg SDWB24**
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 SDWB24** cost to run per year?
Ranking #305 of 709, the Lg SDWB24** runs at roughly $44 a year, neither the cheapest nor the priciest in its class. 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. Adjusted for size, it is more efficient than 68% of dishwasher models we track, a solidly above-average result. 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 LDTS555** at $44/yr runs a little cheaper and the Lg SDWD24** 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 SDWB24**'s $44/yr adds up to roughly $396 in electricity alone, before purchase price or repairs.
Also sold as: Lg LDB454***, Lg LDF554#**, Lg LDFC242**, Lg LDFC353**, Lg LDFN343**, Lg LDFN454**, Lg LDP679#**, Lg LDP681***, Lg LDPH555**, Lg LDPH676**, Lg LDPH797**, Lg LDPM676**, Lg LDPN454**, Lg LDPS676**, Lg LDT780#**, Lg LDTH555**, Lg LDTH797**, Lg LDTS555**, Lg Signature LUDP890***, Signature Kitchen Suite, Sks SKSDW24***, Signature Kitchen Suite, Sks SKSDW241**.
By the numbers
The Lg SDWB24** 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 SDWB24** 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 SDWB24** 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 SDWB24** 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 SDWB24** uses 22.5% less energy.
What drives its running cost
At 15 place settings, the Lg SDWB24** is a mid-size dishwasher for its class, which spans 2 to 18 place settings with a median of 14 place settings, neither the size advantage of a small unit nor the size penalty of a large one applies here, so its running cost is a fairer test of efficiency alone.
- 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 SDWB24** 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 SDWB24** 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 SDWB24** 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 |
|---|---|---|
| 304 | Lg LDTS555**15 place settings | $44 |
| 303 | Lg LDTH797**15 place settings | $44 |
| 302 | Lg LDTH555**15 place settings | $44 |
| 301 | Lg LDT780#**15 place settings | $44 |
| 300 | Lg LDPS676**15 place settings | $44 |
Source
ES_1118034_SDWB24**_01242023083726_80156126View certified dishwasher listingsENERGY STAR data as of July 2026Lg and SDWB24** 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.