Model
Liebherr MF2451
Rank #389 means 388 of the 622 freezer models we track cost less to run each year; the 34th efficiency percentile means it uses less energy for its size than 34% of those models.
What does the Liebherr MF2451 cost to run per year?
At about $81 a year, the Liebherr MF2451 costs more to run than most freezer models we track, rank #389 of 622. It uses 21% less energy than the U.S. federal standard model in its class, which would cost about $101/yr to run, a saving of roughly $20 a year. Efficiency-wise, once size is accounted for, it trails most of the class, ahead of only 34% of the models we track. This class has no published efficiency-factor figure beyond annual kWh itself, so at 11.5 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 L2 LRU17B6A** at $81/yr runs a little cheaper and the Midea MRU17F5A** at $81/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 Liebherr MF2451's $81/yr adds up to roughly $1134 in electricity alone, before purchase price or repairs.
By the numbers
The Liebherr MF2451 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 $81/yr, here is what the Liebherr MF2451 adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Liebherr MF2451 costs about $810. That is roughly $200 less than a standard model in its class, which would run closer to $1010 over the same ten years.
How the Liebherr MF2451 compares
The freezer class we track runs from $25 to $120 a year. At $81/yr, it runs about $6 a year above the class median of $75, and it is about $56 a year more than the cheapest freezer to run at $25. Against the US federal standard model for its class at about $101/yr, the Liebherr MF2451 uses 21% less energy.
What drives its running cost
At 11.5 cu ft, the Liebherr MF2451 is a mid-size freezer for its class, which spans 1.1 to 23 cu ft with a median of 13.8 cu ft, right in the middle of the capacity range, so capacity is roughly a wash compared with the rest of the class.
- 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 Liebherr MF2451 cheap to run?
Its $81/yr running cost, rank #389 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 Liebherr MF2451 cost per month?
About $6.77 a month, which is the $81 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: 438 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $81 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Liebherr MF2451 for its size?
34th percentile once size is factored in. That means its size-adjusted efficiency is not the main reason for the running-cost figure above; its capacity plays a large role too.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 388 | L2 LRU17B6A**17 cu ft | $81 |
| 387 | L2 LRU17B6***17 cu ft | $81 |
| 386 | Insignia NS-UZ17WH0-C*17 cu ft | $81 |
| 385 | Insignia NS-UZ17WH017 cu ft | $81 |
| 384 | Insignia NS-UZ17SS0-C*17 cu ft | $81 |
Source
ES_1017655_MF2451_12052018035621_70208456View certified freezer listingsENERGY STAR data as of July 2026Liebherr and MF2451 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.