Model
Conserv FR430S
Rank #103 means 102 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 Conserv FR430S cost to run per year?
The Conserv FR430S runs for about $48 a year, landing it near the bottom of the cost table at rank #103 of 622 freezer models we track. It uses 11% 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. Efficiency-wise, once size is accounted for, it lags most of the class, ahead of only 13% of the models we track. This class has no published efficiency-factor figure beyond annual kWh itself, so at 4.3 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 Conserv FR430B at $48/yr runs a little cheaper and the Conserv FR430SC 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 FR430S's $48/yr adds up to roughly $672 in electricity alone, before purchase price or repairs.
Also sold as: Conserv FR430B.
By the numbers
The Conserv FR430S 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 FR430S 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 FR430S 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 FR430S 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 FR430S uses 11% less energy.
What drives its running cost
At 4.3 cu ft, the Conserv FR430S 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. 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 Conserv FR430S cheap to run?
Yes. Its $48/yr running cost puts it at rank #103 of 622, below what most freezer models we track cost to run.
How much does the Conserv FR430S cost per month?
About $4.02 a month, which is the $48 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: 260 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $48 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Conserv FR430S 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 |
|---|---|---|
| 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 |
| 99 | Criterion CUF36C1W3.6 cu ft | $47 |
Source
ES_1145610_FR430S_07162023220919_80162201View certified freezer listingsENERGY STAR data as of July 2026Conserv and FR430S 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.