Freezers
LiebherrUF3651
ENERGY STAR certified · Jan 2026 · Most Efficient
- Annual energy use
- 155 kWh/yr
- Adjusted volume
- 4.4 ft³
- Total volume
- 2.5 ft³
- Below federal standard
- 61 %
Running cost calculator
Rate used: 28.830 ¢/kWh · Alaska statewide average, EIA, July 2026.
Where your state sits among all 51
Typical cost to run a freezer in Alaska · Cost to run a freezer in every state
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How this is calculated
- Annual energy use is the figure ENERGY STAR lists for this model under typical test conditions. It is not measured in your home.
- Yearly cost = annual kWh × your rate. Monthly cost is the yearly cost divided by 12, a flat average. Five-year cost keeps the rate constant; prices will change.
- Statewide averages are not your utility’s tariff. Use your bill’s rate for a closer number.
- We do not estimate watts or hourly cost: the source data does not include them.
How it compares
Among 11 ENERGY STAR certified compact models with a similar adjusted volume (3.5 to 5.3 ft³), this one ranks 2nd lowest in annual energy use.
- Median of these models
- 231 kWh/yr
- This model vs the median
- -33%
- Uses less than
- 82% of them
At the rate used above (Alaska statewide average, EIA, July 2026), that is about $21.91 a year less than the median of these models, $219 over ten years at today’s price.
Compared with every comparable model on the ENERGY STAR list, not only the ones published on this site. Same type, similar size.
Yearly cost by state
Same 155 kWh/yr at each state’s average residential price (2026-07).
Comparable models
Same type, within 20% of this model’s adjusted volume.
Specifications
- Annual energy use
- 155 kWh/yrENERGY STAR estimated annual energy use, typical conditions (DOE test procedure)
- Adjusted volume
- 4.4 ft³Adjusted volume used for the federal standards
- Total volume
- 2.5 ft³Total interior volume
- Below federal standard
- 61 %As published by ENERGY STAR
- Type
- Compact
- Product class
- 17 - Compact upright freezers with automatic defrost
- Defrost
- Automatic
- Compact
- Yes
- Built-in
- No
- Ice maker
- No
- Connected
- No
- Markets
- United States, Canada
- Available on market
- 2025-06-01
- ENERGY STAR ID
- 4520324
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Frequently asked questions
How much electricity does the Liebherr UF3651 use?
ENERGY STAR lists 155 kWh per year under typical test conditions, which is calculated with U.S. Department of Energy test procedures. Your use will differ with how often the lid or door is opened, the room temperature and how full the freezer is kept.
How much does it cost to run?
At statewide average residential prices, the listed annual use costs about $19.72 in Louisiana and $74.40 in Hawaii (EIA, 2026-07). Your own utility rate may be different; enter it in the calculator.
How does the Liebherr UF3651 compare with similar models?
Among 11 ENERGY STAR certified compact models with a similar adjusted volume, it ranks 2nd lowest in annual energy use. Its 155 kWh per year is 33% below the median of 231 kWh.
What does adjusted volume mean?
ENERGY STAR's adjusted volume counts the freezer compartment more heavily than the fresh-food compartment, because freezers need more energy per cubic foot. It is the size measure behind the federal energy standards. This model lists 4.4 ft³ adjusted volume and 2.5 ft³ total volume.
How does it compare with the federal standard?
ENERGY STAR lists this model as using 61% less energy than the federal standard for its product class. That percentage is published by ENERGY STAR and is not recalculated here.
Learn more
Methodology and sources
Model data comes from the ENERGY STAR Certified Freezers dataset (EPA). Electricity prices are statewide average residential prices from the U.S. EIA, latest period July 2026. Values are stored locally and refreshed by scheduled imports. Missing values are left blank, never estimated.