Model
Lg SDNTHS72*
Rank #64 means 63 of the 709 dishwasher models we track cost less to run each year; the 95th efficiency percentile means it uses less energy for its size than 95% of those models.
What does the Lg SDNTHS72* cost to run per year?
Rank #64 of 709 puts the Lg SDNTHS72* among the cheapest dishwasher models we track to keep running, at roughly $41 a year. It uses 28.3% less energy than the U.S. federal standard model in its class, which would cost about $57/yr to run, a saving of roughly $16 a year. Size-adjusted, this model beats 95% of dishwasher models we track on efficiency, a standout even among the class's efficient models. This class has no published efficiency-factor figure beyond annual kWh itself, so at 16 place settings (the class spans 2 to 18), size is the clearest lever we can point to for this model's running cost.
Immediately around it on the leaderboard, the Lg LDNTM545* at $41/yr runs a little cheaper and the Lg Signature SDNTH981* at $41/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 SDNTHS72*'s $41/yr adds up to roughly $369 in electricity alone, before purchase price or repairs.
Also sold as: Asko DBI364*.
By the numbers
The Lg SDNTHS72* 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 $41/yr, here is what the Lg SDNTHS72* 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 SDNTHS72* costs about $410. That is roughly $160 less than a standard model in its class, which would run closer to $570 over the same ten years.
How the Lg SDNTHS72* compares
The dishwasher class we track runs from $15 to $45 a year. At $41/yr, it runs about $3 a year cheaper than the class median of $44, and it is about $26 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 SDNTHS72* uses 28.3% less energy.
What drives its running cost
At 16 place settings, the Lg SDNTHS72* is a large dishwasher for its class, which spans 2 to 18 place settings with a median of 14 place settings, and larger dishwasher models generally cost more to run than smaller ones in the same class, simply because there is more to keep cold, spin, heat, or light.
- Place-setting capacity. Place-setting capacity is the main driver of how much water a cycle has to heat, and heating that water is most of a dishwasher's electricity use.
- Water heating. Most dishwashers have a booster heater that raises incoming water to sanitizing temperature; this heating step, not the pump or motor, accounts for most of a cycle's electricity use.
- Cycle length and drying method. Heavy or sanitize cycles run longer and hotter than a normal or eco cycle, and heated-dry options cost more to run than air-dry or condensation drying.
Common questions
Is the Lg SDNTHS72* cheap to run?
Yes. Its $41/yr running cost puts it at rank #64 of 709, below what most dishwasher models we track cost to run.
How much does the Lg SDNTHS72* cost per month?
About $3.4 a month, which is the $41 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: 220 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $41 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Lg SDNTHS72* for its size?
95th 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 |
|---|---|---|
| 89 | Lg LDNTM545*16 place settings | $41 |
| 88 | Lg LDNTH862*16 place settings | $41 |
| 87 | Lg LDNTH753*16 place settings | $41 |
| 86 | Lg LDNTC326*15 place settings | $41 |
| 85 | Lg LDNPQ555*16 place settings | $41 |
Source
ES_1118034_SDNTHS72*_03062025091809_80243199View certified dishwasher listingsENERGY STAR data as of July 2026Lg and SDNTHS72* 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.