Model
Zephyr PRW24C02CG
Rank #29 means 28 of the 1,000 refrigerator models we track cost less to run each year; the 47th efficiency percentile means it uses less energy for its size than 47% of those models.
What does the Zephyr PRW24C02CG cost to run per year?
The Zephyr PRW24C02CG runs for about $29 a year, landing it in the very bottom slice of the cost table at rank #29 of 1,000 refrigerator models we track. It uses 21% less energy than the U.S. federal standard model in its class, which would cost about $37/yr to run, a saving of roughly $8 a year. Efficiency-wise, once size is accounted for, it sits right around the class median, ahead of 47% of the models we track. This class has no published efficiency-factor figure beyond annual kWh itself, so at 5.2 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 Xo XOU24WDZOFR at $29/yr runs a little cheaper and the Frigidaire GRWE5726AS at $29/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 PRW24C02CG's $29/yr adds up to roughly $348 in electricity alone, before purchase price or repairs.
By the numbers
The Zephyr PRW24C02CG 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 $29/yr, here is what the Zephyr PRW24C02CG 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 PRW24C02CG costs about $290. That is roughly $80 less than a standard model in its class, which would run closer to $370 over the same ten years.
How the Zephyr PRW24C02CG compares
The refrigerator class we track runs from $8 to $149 a year. At $29/yr, it runs about $35 a year cheaper than the class median of $64, and it is about $21 a year more than the cheapest refrigerator to run at $8. Against the US federal standard model for its class at about $37/yr, the Zephyr PRW24C02CG uses 21% less energy.
What drives its running cost
At 5.2 cu ft, the Zephyr PRW24C02CG is a small refrigerator for its class, which spans 1.2 to 31.7 cu ft with a median of 12.6 cu ft, and smaller refrigerator models generally cost less to run for the same job, all else being equal.
- 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 PRW24C02CG cheap to run?
Yes. Its $29/yr running cost puts it at rank #29 of 1,000, below what most refrigerator models we track cost to run.
How much does the Zephyr PRW24C02CG cost per month?
About $2.41 a month, which is the $29 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: 156 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $29 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Zephyr PRW24C02CG for its size?
47th 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 |
|---|---|---|
| 28 | Xo XOU24WDZOFR5.4 cu ft | $29 |
| 27 | Xo XOU24WDZGOL5.4 cu ft | $29 |
| 26 | Xo XOU24WDZGBL5.4 cu ft | $29 |
| 25 | Liebherr HW 80009 cu ft | $29 |
| 24 | Jennair JBWFNR18RX8 cu ft | $28 |
Source
ES_1058337_PRW24C02CG_12292022165948_2357751View certified refrigerator listingsENERGY STAR data as of July 2026Zephyr and PRW24C02CG 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.