Model
Zephyr PRB24C01CBSG
Rank #343 means 342 of the 1,000 refrigerator models we track cost less to run each year; the 31st efficiency percentile means it uses less energy for its size than 31% of those models.
What does the Zephyr PRB24C01CBSG cost to run per year?
The Zephyr PRB24C01CBSG is a relatively cheap runner for its class: about $52 a year, rank #343 of 1,000. It uses 11% less energy than the U.S. federal standard model in its class, which would cost about $58/yr to run, a saving of roughly $6 a year. Its 31th size-adjusted efficiency percentile is a step behind the class median, though not among the weakest results. At 5.6 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 Xo XOU24BCSFR at $52/yr runs a little cheaper and the Zephyr PRR24C01AS-OD at $52/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 Zephyr PRB24C01CBSG's $52/yr adds up to roughly $624 in electricity alone, before purchase price or repairs.
Also sold as: Zephyr PRR24C01AS-OD.
By the numbers
The Zephyr PRB24C01CBSG 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 $52/yr, here is what the Zephyr PRB24C01CBSG adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Zephyr PRB24C01CBSG costs about $520. That is roughly $60 less than a standard model in its class, which would run closer to $580 over the same ten years.
How the Zephyr PRB24C01CBSG compares
The refrigerator class we track runs from $8 to $149 a year. At $52/yr, it runs about $12 a year cheaper than the class median of $64, and it is about $44 a year more than the cheapest refrigerator to run at $8. Against the US federal standard model for its class at about $58/yr, the Zephyr PRB24C01CBSG uses 11% less energy.
What drives its running cost
At 5.6 cu ft, the Zephyr PRB24C01CBSG 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 Zephyr PRB24C01CBSG cheap to run?
Yes, relatively. At $52 a year it ranks #343 of 1,000 refrigerator models we track, in the cheaper part of its class to run.
How much does the Zephyr PRB24C01CBSG cost per month?
Roughly $4.3/mo, spreading the $52/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 278 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $52 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Zephyr PRB24C01CBSG for its size?
31st percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 342 | Xo XOU24BCSFR5.7 cu ft | $52 |
| 341 | Xo XOU24BCGSL5.7 cu ft | $52 |
| 340 | Xo XOU24BCGBSL5.7 cu ft | $52 |
| 339 | Xo XOU24BCFOL5.7 cu ft | $52 |
| 338 | Insignia NS-CF70TMSS6-C7.3 cu ft | $52 |
Source
ES_1058337_PRB24C01CBSG_12112023105856_80181257View certified refrigerator listingsENERGY STAR data as of July 2026Zephyr and PRB24C01CBSG 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.