Model
Zephyr PRR24C01AS-OD
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 PRR24C01AS-OD cost to run per year?
At about $52 a year, the Zephyr PRR24C01AS-OD undercuts most refrigerator models we track on running cost, 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 size-adjusted efficiency percentile of 31 suggests its capacity is doing more work than its efficiency to keep the headline cost down. This class has no published efficiency-factor figure beyond annual kWh itself, so at 5.6 cu ft (the class spans 1.2 to 31.7), size is the clearest lever we can point to for this model's running cost.
Immediately around it on the leaderboard, the Zephyr PRB24C01CBSG at $52/yr runs a little cheaper and the Thermador T30IR905SP 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 PRR24C01AS-OD's $52/yr adds up to roughly $624 in electricity alone, before purchase price or repairs.
Also sold as: Zephyr PRB24C01CBSG.
By the numbers
The Zephyr PRR24C01AS-OD 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 PRR24C01AS-OD 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 PRR24C01AS-OD 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 PRR24C01AS-OD 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 PRR24C01AS-OD uses 11% less energy.
What drives its running cost
At 5.6 cu ft, the Zephyr PRR24C01AS-OD 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. More cubic feet of cold air to maintain generally means a bigger compressor and a higher running-cost figure, even among efficient models.
- Counter depth vs standard depth. Standard-depth models generally offer more interior volume per unit of width than counter-depth models, a tradeoff between built-in looks and cubic feet.
- Compressor technology. How a compressor cycles, full on/off versus a variable-speed inverter design, is one of the biggest hidden differences behind two fridges with similar cubic feet but different running costs.
- Placement and ventilation. Ventilation clearance around the back and top matters more than most owners expect; a fridge starved of airflow runs its compressor longer to hold the same temperature.
Common questions
Is the Zephyr PRR24C01AS-OD cheap to run?
Yes. Its $52/yr running cost puts it at rank #343 of 1,000, below what most refrigerator models we track cost to run.
How much does the Zephyr PRR24C01AS-OD cost per month?
About $4.3 a month, which is the $52 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: 278 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $52 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Zephyr PRR24C01AS-OD 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 |
|---|---|---|
| 343 | Zephyr PRB24C01CBSG5.6 cu ft | $52 |
| 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 |
Source
ES_1058337_PRR24C01AS-OD_12112023105856_80181257View certified refrigerator listingsENERGY STAR data as of July 2026Zephyr and PRR24C01AS-OD 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.