Model
Ca’Lefort CLF-WS428
Rank #208 means 207 of the 1,000 refrigerator models we track cost less to run each year; the 97th efficiency percentile means it uses less energy for its size than 97% of those models.
What does the Ca’Lefort CLF-WS428 cost to run per year?
Do the math and the Ca’Lefort CLF-WS428's $44/yr puts it at rank #208 of 1,000, on the cheaper side of the class. It uses 14% less energy than the U.S. federal standard model in its class, which would cost about $51/yr to run, a saving of roughly $7 a year. Normalized for capacity, it ranks ahead of 97% of refrigerator models we track on efficiency, an exceptional showing for the class. At 15 cu ft, it is a mid-size refrigerator for the class, which runs 1.2 to 31.7 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 Marvel MPRE424-SS31A at $43/yr runs a little cheaper and the Marathon MAR86BLS at $44/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A refrigerator typically stays in service for somewhere around 12 years; over that span, the Ca’Lefort CLF-WS428's $44/yr adds up to roughly $528 in electricity alone, before purchase price or repairs.
By the numbers
The Ca’Lefort CLF-WS428 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 $44/yr, here is what the Ca’Lefort CLF-WS428 adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Ca’Lefort CLF-WS428 costs about $440. That is roughly $70 less than a standard model in its class, which would run closer to $510 over the same ten years.
How the Ca’Lefort CLF-WS428 compares
The refrigerator class we track runs from $8 to $149 a year. At $44/yr, it runs about $20 a year cheaper than the class median of $64, and it is about $36 a year more than the cheapest refrigerator to run at $8. Against the US federal standard model for its class at about $51/yr, the Ca’Lefort CLF-WS428 uses 14% less energy.
What drives its running cost
At 15 cu ft, the Ca’Lefort CLF-WS428 is a mid-size refrigerator for its class, which spans 1.2 to 31.7 cu ft with a median of 12.6 cu ft, neither the size advantage of a small unit nor the size penalty of a large one applies here, so its running cost is a fairer test of efficiency alone.
- Interior volume. Cubic feet of interior volume is the first thing that scales a fridge's running cost up or down, before compressor quality even enters the picture.
- Counter depth vs standard depth. Counter-depth models sit flush with cabinets but usually hold less interior volume than a standard-depth model of the same width, which can nudge the per-cubic-foot running cost either way.
- Compressor technology. Newer variable-speed (inverter) compressors modulate output instead of cycling fully on and off, which tends to use less energy for the same cooling job than an older fixed-speed compressor.
- Placement and ventilation. A fridge pushed tight against a wall or cabinet, or standing next to an oven or in direct sun, works harder to shed the heat its compressor produces, which can push real-world cost above the published figure.
Common questions
Is the Ca’Lefort CLF-WS428 cheap to run?
Yes, relatively. At $44 a year it ranks #208 of 1,000 refrigerator models we track, in the cheaper part of its class to run.
How much does the Ca’Lefort CLF-WS428 cost per month?
Roughly $3.63/mo, spreading the $44/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 235 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $44 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Ca’Lefort CLF-WS428 for its size?
97th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 207 | Marvel MPRE424-SS31A5.1 cu ft | $43 |
| 206 | Jenn Air JURF*242H***5 cu ft | $43 |
| 205 | U-Line 3018RB3.4 cu ft | $43 |
| 204 | Liebherr MRB 241011.5 cu ft | $43 |
| 203 | Rca RFR464-B-WHITE-COM4.6 cu ft | $43 |
Source
ES1152556CLF-WS42801262026202015View certified refrigerator listingsENERGY STAR data as of July 2026Ca’Lefort and CLF-WS428 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.