Model
Loch L1126
Rank #1 means 0 of the 709 dishwasher models we track cost less to run each year; the 0th efficiency percentile means it uses less energy for its size than 0% of those models.
What does the Loch L1126 cost to run per year?
Out of the 709 dishwasher models we track, the Loch L1126 lands at rank #1 on cost, roughly $15 a year, a standout figure at the cheap end of the class. It uses 64% less energy than the U.S. federal standard model in its class, which would cost about $41/yr to run, a saving of roughly $26 a year. Its size-adjusted efficiency percentile of 0 means its running cost, whatever it is, owes almost nothing to efficiency and almost everything to capacity. This class has no published efficiency-factor figure beyond annual kWh itself, so at 2 place settings (the class spans 2 to 18), size is the clearest lever we can point to for this model's running cost.
On the leaderboard, the Fisher & Paykel DD24STX6I1 at $21/yr runs a little more, the closest neighbor to its exact spot in the ranking. A dishwasher typically stays in service for somewhere around 9 years; over that span, the Loch L1126's $15/yr adds up to roughly $135 in electricity alone, before purchase price or repairs. At rank #1 of 709, it is one of the single cheapest dishwasher models we track to run, in the top one percent on cost.
By the numbers
The Loch L1126 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 $15/yr, here is what the Loch L1126 adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Loch L1126 costs about $150. That is roughly $260 less than a standard model in its class, which would run closer to $410 over the same ten years.
How the Loch L1126 compares
The dishwasher class we track runs from $15 to $45 a year. At $15/yr, it runs about $29 a year cheaper than the class median of $44, and it is the cheapest dishwasher to run in the class among the models we track. Against the US federal standard model for its class at about $41/yr, the Loch L1126 uses 64% less energy.
What drives its running cost
At 2 place settings, the Loch L1126 is a small dishwasher for its class, which spans 2 to 18 place settings with a median of 14 place settings, and smaller dishwasher models generally cost less to run for the same job, all else being equal.
- 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 Loch L1126 cheap to run?
Yes. Its $15/yr running cost puts it at rank #1 of 709, below what most dishwasher models we track cost to run.
How much does the Loch L1126 cost per month?
About $1.24 a month, which is the $15 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: 80 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $15 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Loch L1126 for its size?
0th percentile once size is factored in. That means its size-adjusted efficiency is not the main reason for the running-cost figure above; its capacity plays a large role too.
Cheaper to run in the same class
This is already the cheapest model to run in its class among the ones we track.
Source
ES_1151407_L1126_02212025094903_80239223View certified dishwasher listingsENERGY STAR data as of July 2026Loch and L1126 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.