Model
Black+Decker BUC2120M*
Rank #409 means 408 of the 1,000 refrigerator models we track cost less to run each year; the 99th efficiency percentile means it uses less energy for its size than 99% of those models.
What does the Black+Decker BUC2120M* cost to run per year?
The Black+Decker BUC2120M* holds rank #409 of 1,000 on running cost, at about $58 a year, an unremarkable but typical figure for the class. It uses 11% less energy than the U.S. federal standard model in its class, which would cost about $65/yr to run, a saving of roughly $7 a year. Size-adjusted, this model beats 99% of refrigerator models we track on efficiency, a standout even among the class's efficient models. This class has no published efficiency-factor figure beyond annual kWh itself, so at 21.2 cu ft (the class spans 1.2 to 31.7), size is the clearest lever we can point to for this model's running cost.
Immediately around it on the leaderboard, the Miele K 2911 SF at $58/yr runs a little cheaper and the Element EHUF21CECW at $58/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A refrigerator typically stays in service for somewhere around 12 years; over that span, the Black+Decker BUC2120M*'s $58/yr adds up to roughly $696 in electricity alone, before purchase price or repairs.
Also sold as: Element EHUF21CECW, Koolatron KTUF600-W-E, Professional Series PS-UFR211-I3B, Upstreman UF212.
By the numbers
The Black+Decker BUC2120M* 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 $58/yr, here is what the Black+Decker BUC2120M* adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Black+Decker BUC2120M* costs about $580. That is roughly $70 less than a standard model in its class, which would run closer to $650 over the same ten years.
How the Black+Decker BUC2120M* compares
The refrigerator class we track runs from $8 to $149 a year. At $58/yr, it runs about $6 a year cheaper than the class median of $64, and it is about $50 a year more than the cheapest refrigerator to run at $8. Against the US federal standard model for its class at about $65/yr, the Black+Decker BUC2120M* uses 11% less energy.
What drives its running cost
At 21.2 cu ft, the Black+Decker BUC2120M* is a large refrigerator for its class, which spans 1.2 to 31.7 cu ft with a median of 12.6 cu ft, size is usually the single biggest lever behind a running-cost figure, and at this end of the range there is more capacity to service, which tends to push the number up.
- Interior volume. More cubic feet of cold air to maintain generally means a bigger compressor and a higher running-cost figure, even among efficient models.
- Counter depth vs standard depth. Standard-depth models generally offer more interior volume per unit of width than counter-depth models, a tradeoff between built-in looks and cubic feet.
- Compressor technology. How a compressor cycles, full on/off versus a variable-speed inverter design, is one of the biggest hidden differences behind two fridges with similar cubic feet but different running costs.
- Placement and ventilation. Ventilation clearance around the back and top matters more than most owners expect; a fridge starved of airflow runs its compressor longer to hold the same temperature.
Common questions
Is the Black+Decker BUC2120M* cheap to run?
Roughly, yes. Its $58/yr figure is close to the class median, ranking #409 of 1,000, neither a bargain nor a splurge on running cost.
How much does the Black+Decker BUC2120M* cost per month?
About $4.86 a month, which is the $58 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: 314 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $58 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Black+Decker BUC2120M* for its size?
99th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 408 | Miele K 2911 SF20.6 cu ft | $58 |
| 407 | Upstreman BD3213.2 cu ft | $58 |
| 406 | Rca RFR834-C3.2 cu ft | $58 |
| 405 | Miele K 2902 Vi20.6 cu ft | $58 |
| 404 | Galanz GLR12TS5F12 cu ft | $58 |
Source
ES_1126481_BUC2120M*_01232025081313_80237077View certified refrigerator listingsENERGY STAR data as of July 2026Black+Decker and BUC2120M* 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.