Model
Hisense CFU21N6A*E
Rank #528 means 527 of the 622 freezer models we track cost less to run each year; the 93rd efficiency percentile means it uses less energy for its size than 93% of those models.
What does the Hisense CFU21N6A*E cost to run per year?
Do the math and the Hisense CFU21N6A*E's $92/yr puts it at rank #528 of 622, one of the costlier freezer models we track to keep running. 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 $10 a year. Adjusted for its size, it is more efficient than 93% of freezer models we track, a strong result once size is taken into account. At 21.2 cu ft, it is a large freezer for the class, which runs 1.1 to 23 cu ft; 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 Gaggenau RF463703 at $92/yr runs a little cheaper and the Hisense FV21C6AWE at $92/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 Hisense CFU21N6A*E's $92/yr adds up to roughly $1288 in electricity alone, before purchase price or repairs.
Also sold as: Elisii DECVC210S.
By the numbers
The Hisense CFU21N6A*E 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 $92/yr, here is what the Hisense CFU21N6A*E adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Hisense CFU21N6A*E costs about $920. That is roughly $100 less than a standard model in its class, which would run closer to $1020 over the same ten years.
How the Hisense CFU21N6A*E compares
The freezer class we track runs from $25 to $120 a year. At $92/yr, it runs about $17 a year above the class median of $75, and it is about $67 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 Hisense CFU21N6A*E uses 10% less energy.
What drives its running cost
At 21.2 cu ft, the Hisense CFU21N6A*E is a large freezer for its class, which spans 1.1 to 23 cu ft with a median of 13.8 cu ft, among freezer models, bigger capacity is the most common reason a running-cost figure lands on the high side, all else being equal.
- Interior volume. Cubic feet of frozen storage is the first lever behind a freezer's running cost, ahead of insulation or defrost type.
- Insulation and defrost type. Two freezers of the same size can differ meaningfully on running cost based on insulation quality and whether they run an automatic-defrost heater.
- Chest vs upright design. Chest freezers open from the top, so cold air, which sinks, stays inside when the lid opens; upright freezers lose more cold air per door opening for a similar capacity.
Common questions
Is the Hisense CFU21N6A*E cheap to run?
Not especially. At $92 a year it ranks #528 of 622 freezer models we track, in the pricier part of its class to run, though its size and features may still justify that for your needs.
How much does the Hisense CFU21N6A*E cost per month?
Roughly $7.64/mo, spreading the $92/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 494 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $92 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Hisense CFU21N6A*E for its size?
93rd 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 |
|---|---|---|
| 531 | Gaggenau RF46370311.3 cu ft | $92 |
| 530 | Gaggenau RF46370211.3 cu ft | $92 |
| 529 | Elisii DECVC210W21.2 cu ft | $92 |
| 528 | Elisii DECVC210S21.2 cu ft | $92 |
| 527 | West Bend WB210VFLJM#**21 cu ft | $92 |
Source
ES_1110877_CFU21N6A*E_022220240349337_6835633View certified freezer listingsENERGY STAR data as of July 2026Hisense and CFU21N6A*E 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.