Model
Artt ATUF21ES
Rank #463 means 462 of the 622 freezer models we track cost less to run each year; the 89th efficiency percentile means it uses less energy for its size than 89% of those models.
What does the Artt ATUF21ES cost to run per year?
At about $91 a year, the Artt ATUF21ES costs more to run than most freezer models we track, rank #463 of 622. It uses 10% less energy than the U.S. federal standard model in its class, which would cost about $102/yr to run, a saving of roughly $11 a year. Its size-adjusted efficiency percentile of 89 sits well above the class median, a clearly above-average efficiency result. This class has no published efficiency-factor figure beyond annual kWh itself, so at 21 cu ft (the class spans 1.1 to 23), size is the clearest lever we can point to for this model's running cost.
Immediately around it on the leaderboard, the Arctic Wind AUFW210ETH-LK at $91/yr runs a little cheaper and the Artt ATUF21ES SS at $91/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A freezer typically stays in service for somewhere around 14 years; over that span, the Artt ATUF21ES's $91/yr adds up to roughly $1274 in electricity alone, before purchase price or repairs.
Also sold as: Arctic Wind AUFW210ETH-LK.
By the numbers
The Artt ATUF21ES 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 $91/yr, here is what the Artt ATUF21ES adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Artt ATUF21ES costs about $910. That is roughly $110 less than a standard model in its class, which would run closer to $1020 over the same ten years.
How the Artt ATUF21ES compares
The freezer class we track runs from $25 to $120 a year. At $91/yr, it runs about $16 a year above the class median of $75, and it is about $66 a year more than the cheapest freezer to run at $25. Against the US federal standard model for its class at about $102/yr, the Artt ATUF21ES uses 10% less energy.
What drives its running cost
At 21 cu ft, the Artt ATUF21ES is a large freezer for its class, which spans 1.1 to 23 cu ft with a median of 13.8 cu ft, and larger freezer 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.
- Interior volume. As with refrigerators, more cubic feet of frozen storage generally means a bigger compressor and a higher annual energy figure.
- Insulation and defrost type. Better-insulated cabinets lose less cold to the surrounding room, and frost-free (automatic-defrost) freezers run a periodic heating element that a manual-defrost model does not.
- Chest vs upright design. Door orientation affects how much cold air escapes per opening: top-opening chest designs generally hold cold better than front-opening upright ones.
Common questions
Is the Artt ATUF21ES cheap to run?
Its $91/yr running cost, rank #463 of 622, is above what most freezer models we track cost to run, so this is not one of the cheaper picks on electricity alone.
How much does the Artt ATUF21ES cost per month?
About $7.61 a month, which is the $91 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: 492 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $91 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Artt ATUF21ES for its size?
89th 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 |
|---|---|---|
| 463 | Arctic Wind AUFW210ETH-LK21 cu ft | $91 |
| 462 | Arctic Wind AUFSS210ETH-LK21 cu ft | $91 |
| 461 | Fisher & Paykel RS30F15.6 cu ft | $91 |
| 460 | Liebherr MF 306115.2 cu ft | $90 |
| 459 | Gaggenau RVF47779018.2 cu ft | $90 |
Source
ES_0015649_ATUF21ES_10252023115957_80185595View certified freezer listingsENERGY STAR data as of July 2026Artt and ATUF21ES 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.