Model
Miele FNS 7794 E
Rank #163 means 162 of the 622 freezer models we track cost less to run each year; the 22nd efficiency percentile means it uses less energy for its size than 22% of those models.
What does the Miele FNS 7794 E cost to run per year?
Do the math and the Miele FNS 7794 E's $65/yr puts it at rank #163 of 622, on the cheaper side of the class. It uses 28% less energy than the U.S. federal standard model in its class, which would cost about $90/yr to run, a saving of roughly $25 a year. Adjusted for size, it is only more efficient than 22% of freezer models we track, so part of its running cost comes from its capacity rather than efficiency alone. At 7.5 cu ft, it is a small 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 Liebherr SIF5181 at $65/yr runs a little cheaper and the Avanti AV1081VFK0W at $66/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 Miele FNS 7794 E's $65/yr adds up to roughly $910 in electricity alone, before purchase price or repairs.
Also sold as: Liebherr SIF5181.
By the numbers
The Miele FNS 7794 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 $65/yr, here is what the Miele FNS 7794 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 Miele FNS 7794 E costs about $650. That is roughly $250 less than a standard model in its class, which would run closer to $900 over the same ten years.
How the Miele FNS 7794 E compares
The freezer class we track runs from $25 to $120 a year. At $65/yr, it runs about $10 a year cheaper than the class median of $75, and it is about $40 a year more than the cheapest freezer to run at $25. Against the US federal standard model for its class at about $90/yr, the Miele FNS 7794 E uses 28% less energy.
What drives its running cost
At 7.5 cu ft, the Miele FNS 7794 E is a small freezer for its class, which spans 1.1 to 23 cu ft with a median of 13.8 cu ft, less capacity to service is usually the first reason a running-cost figure lands on the low side, before efficiency even enters the picture.
- 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 Miele FNS 7794 E cheap to run?
Yes, relatively. At $65 a year it ranks #163 of 622 freezer models we track, in the cheaper part of its class to run.
How much does the Miele FNS 7794 E cost per month?
Roughly $5.41/mo, spreading the $65/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 350 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $65 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Miele FNS 7794 E for its size?
22nd percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 163 | Liebherr SIF51817.5 cu ft | $65 |
| 162 | Liebherr SF52919.8 cu ft | $65 |
| 161 | Hotpoint HCM22QW*WW21.7 cu ft | $64 |
| 160 | Ge FCM22DL****21.7 cu ft | $64 |
| 159 | Crosley XCM22DM****21.7 cu ft | $64 |
Source
ES_31629_FNS 7794 E_121920252120799_2495097View certified freezer listingsENERGY STAR data as of July 2026Miele and FNS 7794 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.