Model
Summit LDW24WA
Rank #174 means 173 of the 709 dishwasher models we track cost less to run each year; the 77th efficiency percentile means it uses less energy for its size than 77% of those models.
What does the Summit LDW24WA cost to run per year?
At roughly $43 a year to run, ranking #174 of 709, the Summit LDW24WA costs less than the typical dishwasher model we track. It uses 23.8% less energy than the U.S. federal standard model in its class, which would cost about $57/yr to run, a saving of roughly $14 a year. Efficiency-wise, once size is accounted for, it edges out 77% of the class, a modestly above-average showing. This class has no published efficiency-factor figure beyond annual kWh itself, so at 15 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 Summit LDW24SSA at $43/yr runs a little cheaper and the Summit Professional DW2435SS at $43/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 Summit LDW24WA's $43/yr adds up to roughly $387 in electricity alone, before purchase price or repairs.
Also sold as: Aeg F8242FI.
By the numbers
The Summit LDW24WA 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 $43/yr, here is what the Summit LDW24WA adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Summit LDW24WA costs about $430. That is roughly $140 less than a standard model in its class, which would run closer to $570 over the same ten years.
How the Summit LDW24WA compares
The dishwasher class we track runs from $15 to $45 a year. At $43/yr, it runs about $1 a year cheaper than the class median of $44, and it is about $28 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 Summit LDW24WA uses 23.8% less energy.
What drives its running cost
At 15 place settings, the Summit LDW24WA 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. 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 Summit LDW24WA cheap to run?
Yes. Its $43/yr running cost puts it at rank #174 of 709, below what most dishwasher models we track cost to run.
How much does the Summit LDW24WA cost per month?
About $3.62 a month, which is the $43 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: 234 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $43 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Summit LDW24WA for its size?
77th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
Source
ES_92282_LDW24WA_041120211516998_6134143View certified dishwasher listingsENERGY STAR data as of July 2026Summit and LDW24WA 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.