Model
Smeg STU2FABBL2
Rank #99 means 98 of the 709 dishwasher models we track cost less to run each year; the 48th efficiency percentile means it uses less energy for its size than 48% of those models.
What does the Smeg STU2FABBL2 cost to run per year?
Do the math and the Smeg STU2FABBL2's $42/yr puts it at rank #99 of 709, one of the more affordable dishwasher models we track to keep running. It uses 27% less energy than the U.S. federal standard model in its class, which would cost about $57/yr to run, a saving of roughly $15 a year. Adjusted for size, it is more efficient than 48% of dishwasher models we track, a middling result. At 13 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 Fisher&Paykel DW24UNT2X2 at $42/yr runs a little cheaper and the Beko BDDDT48340**** at $42/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 Smeg STU2FABBL2's $42/yr adds up to roughly $378 in electricity alone, before purchase price or repairs.
By the numbers
The Smeg STU2FABBL2 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 $42/yr, here is what the Smeg STU2FABBL2 adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Smeg STU2FABBL2 costs about $420. That is roughly $150 less than a standard model in its class, which would run closer to $570 over the same ten years.
How the Smeg STU2FABBL2 compares
The dishwasher class we track runs from $15 to $45 a year. At $42/yr, it runs about $2 a year cheaper than the class median of $44, and it is about $27 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 Smeg STU2FABBL2 uses 27% less energy.
What drives its running cost
At 13 place settings, the Smeg STU2FABBL2 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 Smeg STU2FABBL2 cheap to run?
Yes, relatively. At $42 a year it ranks #99 of 709 dishwasher models we track, in the cheaper part of its class to run.
How much does the Smeg STU2FABBL2 cost per month?
Roughly $3.46/mo, spreading the $42/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 224 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $42 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Smeg STU2FABBL2 for its size?
48th 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
Source
ES_92281_STU2FABBL2_02262024152153_4225732View certified dishwasher listingsENERGY STAR data as of July 2026Smeg and STU2FABBL2 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.