Model
Fhiaba S180FZ6IU
Rank #398 means 397 of the 622 freezer models we track cost less to run each year; the 13th efficiency percentile means it uses less energy for its size than 13% of those models.
What does the Fhiaba S180FZ6IU cost to run per year?
Do the math and the Fhiaba S180FZ6IU's $82/yr puts it at rank #398 of 622, on the pricier side of the class. It uses 10% less energy than the U.S. federal standard model in its class, which would cost about $89/yr to run, a saving of roughly $7 a year. Normalized for capacity, it beats only 13% of freezer models we track, one of the weaker efficiency results we track for the class. At 7.9 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 Fhiaba S180FZ3IU at $82/yr runs a little cheaper and the Fisher & Paykel RS24F at $82/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 Fhiaba S180FZ6IU's $82/yr adds up to roughly $1148 in electricity alone, before purchase price or repairs.
Also sold as: Fhiaba S180FZ3IU.
By the numbers
The Fhiaba S180FZ6IU 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 $82/yr, here is what the Fhiaba S180FZ6IU adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Fhiaba S180FZ6IU costs about $820. That is roughly $70 less than a standard model in its class, which would run closer to $890 over the same ten years.
How the Fhiaba S180FZ6IU compares
The freezer class we track runs from $25 to $120 a year. At $82/yr, it runs about $7 a year above the class median of $75, and it is about $57 a year more than the cheapest freezer to run at $25. Against the US federal standard model for its class at about $89/yr, the Fhiaba S180FZ6IU uses 10% less energy.
What drives its running cost
At 7.9 cu ft, the Fhiaba S180FZ6IU is a small freezer for its class, which spans 1.1 to 23 cu ft with a median of 13.8 cu ft, and smaller freezer models generally cost less to run for the same job, all else being equal.
- 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 Fhiaba S180FZ6IU cheap to run?
Not especially. At $82 a year it ranks #398 of 622 freezer models we track, in the pricier part of its class to run, though its size and features may still justify that for your needs.
How much does the Fhiaba S180FZ6IU cost per month?
Roughly $6.81/mo, spreading the $82/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 440 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $82 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Fhiaba S180FZ6IU for its size?
13th 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 |
|---|---|---|
| 398 | Fhiaba S180FZ3IU7.9 cu ft | $82 |
| 397 | West Bend WB170VFLJM#**17 cu ft | $81 |
| 396 | Omnimax 3730-73917 cu ft | $81 |
| 395 | Midea WHS-625FWEW117 cu ft | $81 |
| 394 | Midea WHS-625FWESS117 cu ft | $81 |
Source
ES_1148036_S180FZ6IU_032520261300882_8329835View certified freezer listingsENERGY STAR data as of July 2026Fhiaba and S180FZ6IU 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.