Model
Monogram ZIW241NBW****
Rank #7 means 6 of the 1,000 refrigerator models we track cost less to run each year; the 100th efficiency percentile means it uses less energy for its size than 100% of those models.
What does the Monogram ZIW241NBW**** cost to run per year?
The Monogram ZIW241NBW**** runs for about $22 a year, landing it in the very bottom slice of the cost table at rank #7 of 1,000 refrigerator models we track. It uses 55% less energy than the U.S. federal standard model in its class, which would cost about $48/yr to run, a saving of roughly $26 a year. Size-adjusted, this model beats 100% of refrigerator models we track on efficiency, a standout even among the class's efficient models. This class has no published efficiency-factor figure beyond annual kWh itself, so at 13.4 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 Liebherr W5250 at $21/yr runs a little cheaper and the Midea MRW14B2ABB at $22/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 Monogram ZIW241NBW****'s $22/yr adds up to roughly $264 in electricity alone, before purchase price or repairs. At rank #7 of 1,000, it is one of the single cheapest refrigerator models we track to run, in the top one percent on cost.
By the numbers
The Monogram ZIW241NBW**** 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 $22/yr, here is what the Monogram ZIW241NBW**** adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Monogram ZIW241NBW**** costs about $220. That is roughly $260 less than a standard model in its class, which would run closer to $480 over the same ten years.
How the Monogram ZIW241NBW**** compares
The refrigerator class we track runs from $8 to $149 a year. At $22/yr, it runs about $42 a year cheaper than the class median of $64, and it is about $14 a year more than the cheapest refrigerator to run at $8. Against the US federal standard model for its class at about $48/yr, the Monogram ZIW241NBW**** uses 55% less energy.
What drives its running cost
At 13.4 cu ft, the Monogram ZIW241NBW**** 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 Monogram ZIW241NBW**** cheap to run?
Yes. Its $22/yr running cost puts it at rank #7 of 1,000, below what most refrigerator models we track cost to run.
How much does the Monogram ZIW241NBW**** cost per month?
About $1.83 a month, which is the $22 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: 118 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $22 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Monogram ZIW241NBW**** for its size?
100th percentile once size is factored in. That means its size-adjusted efficiency is a real factor in the running-cost figure above; its capacity plays a large role too.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 6 | Liebherr W525013.1 cu ft | $21 |
| 5 | Liebherr HWgb 18031.6 cu ft | $19 |
| 4 | Liebherr UW37203.6 cu ft | $19 |
| 3 | Perlick URD24W*1-5-****3.1 cu ft | $18 |
| 2 | Kalamazoo Outdoor Gourmet UKS15W*1-5-****2.8 cu ft | $18 |
Source
ES_1123206_ZIW241NBW****_05292024144106_80212180View certified refrigerator listingsENERGY STAR data as of July 2026Monogram and ZIW241NBW**** 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.