Model
Conserv FR430SC
Rank #105 means 104 of the 622 freezer models we track cost less to run each year; the 12th efficiency percentile means it uses less energy for its size than 12% of those models.
What does the Conserv FR430SC cost to run per year?
Do the math and the Conserv FR430SC's $48/yr puts it at rank #105 of 622, one of the more affordable freezer models we track to keep running. It uses 10% less energy than the U.S. federal standard model in its class, which would cost about $54/yr to run, a saving of roughly $6 a year. Adjusted for size, it is only more efficient than 12% of freezer models we track, so its headline cost is mostly a function of its capacity rather than efficiency. At 4.2 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 Conserv FR430S at $48/yr runs a little cheaper and the Danby Designer DUFM043A2* at $48/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 Conserv FR430SC's $48/yr adds up to roughly $672 in electricity alone, before purchase price or repairs.
Also sold as: Koolmore KM-RUF-42C.
By the numbers
The Conserv FR430SC 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 $48/yr, here is what the Conserv FR430SC adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Conserv FR430SC costs about $480. That is roughly $60 less than a standard model in its class, which would run closer to $540 over the same ten years.
How the Conserv FR430SC compares
The freezer class we track runs from $25 to $120 a year. At $48/yr, it runs about $27 a year cheaper than the class median of $75, and it is about $23 a year more than the cheapest freezer to run at $25. Against the US federal standard model for its class at about $54/yr, the Conserv FR430SC uses 10% less energy.
What drives its running cost
At 4.2 cu ft, the Conserv FR430SC 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 Conserv FR430SC cheap to run?
Yes, relatively. At $48 a year it ranks #105 of 622 freezer models we track, in the cheaper part of its class to run.
How much does the Conserv FR430SC cost per month?
Roughly $4.02/mo, spreading the $48/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 260 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $48 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Conserv FR430SC for its size?
12th 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 |
|---|---|---|
| 104 | Conserv FR430S4.3 cu ft | $48 |
| 103 | Conserv FR430B4.3 cu ft | $48 |
| 102 | Kenmore 111. 220629105.9 cu ft | $48 |
| 101 | Kenmore 111. 2206****5.9 cu ft | $48 |
| 100 | Finlux 2451 DUF1650WH6.6 cu ft | $48 |
Source
ES_1145610_FR430SC_01282025111720_80228505View certified freezer listingsENERGY STAR data as of July 2026Conserv and FR430SC 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.