Freezers
MieleFMC3821L
ENERGY STAR certified · Sep 2026 · Most Efficient
- Annual energy use
- 438 kWh/yr
- Adjusted volume
- 25 ft³
- Total volume
- 14.2 ft³
- Below federal standard
- 27 %
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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 231 ENERGY STAR certified upright freezer models with a similar adjusted volume (20 to 30 ft³), this one ranks 151st lowest in annual energy use.
- Median of these models
- 429 kWh/yr
- This model vs the median
- +2%
- Uses less than
- 25% of them
Compared with every comparable model on the ENERGY STAR list, not only the ones published on this site. Same type, similar size.
Same type and size, lower energy use
| Model | kWh/yr | Difference |
|---|---|---|
| Samsung RZ40H11PE* | 361 | 361 kWh |
| Hisense CFU14N6AWE | 391 | 391 kWh |
| Mora MFU140N6AWE | 391 | 391 kWh |
| Hisense FV14C7BWE | 391 | 391 kWh |
| Hisense FU140N3SSEL | 391 | 391 kWh |
Yearly cost by state
Same 438 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
- 438 kWh/yrENERGY STAR estimated annual energy use, typical conditions (DOE test procedure)
- Adjusted volume
- 25 ft³Adjusted volume used for the federal standards
- Total volume
- 14.2 ft³Total interior volume
- Below federal standard
- 27 %As published by ENERGY STAR
- Type
- Upright Freezer
- Product class
- 9I-BI - Built-In upright freezers with automatic defrost with an automatic icemaker
- Defrost
- Automatic
- Compact
- No
- Built-in
- Yes
- Ice maker
- Yes
- Connected
- No
- Markets
- United States, Canada
- Available on market
- 2026-09-09
- ENERGY STAR ID
- 4701814
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Frequently asked questions
How much electricity does the Miele FMC3821L use?
ENERGY STAR lists 438 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 $55.71 in Louisiana and $210.24 in Hawaii (EIA, 2026-07). Your own utility rate may be different; enter it in the calculator.
How does the Miele FMC3821L compare with similar models?
Among 231 ENERGY STAR certified upright freezer models with a similar adjusted volume, it ranks 151st lowest in annual energy use. Its 438 kWh per year is 2% above the median of 429 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 25 ft³ adjusted volume and 14.2 ft³ total volume.
How does it compare with the federal standard?
ENERGY STAR lists this model as using 27% 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.