Model
Hestan KRFR36PRI
Rank #830 means 829 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 Hestan KRFR36PRI cost to run per year?
Among the 1,000 refrigerator models we track, the Hestan KRFR36PRI's $108/yr running cost ranks it #830, in the pricier fifth of the class. It uses 10% less energy than the U.S. federal standard model in its class, which would cost about $119/yr to run, a saving of roughly $11 a year. Capacity-normalized, it ranks ahead of 47% of refrigerator models we track, right in the class's middle band. This class has no published efficiency-factor figure beyond annual kWh itself, so at 19.3 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 Mora MRF266N6C*E at $108/yr runs a little cheaper and the Maytag MBF2258FE*** at $108/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 Hestan KRFR36PRI's $108/yr adds up to roughly $1296 in electricity alone, before purchase price or repairs.
By the numbers
The Hestan KRFR36PRI 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 $108/yr, here is what the Hestan KRFR36PRI adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Hestan KRFR36PRI costs about $1080. That is roughly $110 less than a standard model in its class, which would run closer to $1190 over the same ten years.
How the Hestan KRFR36PRI compares
The refrigerator class we track runs from $8 to $149 a year. At $108/yr, it runs about $44 a year above the class median of $64, and it is about $100 a year more than the cheapest refrigerator to run at $8. Against the US federal standard model for its class at about $119/yr, the Hestan KRFR36PRI uses 10% less energy.
What drives its running cost
At 19.3 cu ft, the Hestan KRFR36PRI is a large refrigerator for its class, which spans 1.2 to 31.7 cu ft with a median of 12.6 cu ft, size is usually the single biggest lever behind a running-cost figure, and at this end of the range there is more capacity to service, which tends to push the number up.
- 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 Hestan KRFR36PRI cheap to run?
Its $108/yr running cost, rank #830 of 1,000, is above what most refrigerator models we track cost to run, so this is not one of the cheaper picks on electricity alone.
How much does the Hestan KRFR36PRI cost per month?
About $9.03 a month, which is the $108 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: 584 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $108 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Hestan KRFR36PRI 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 |
|---|---|---|
| 829 | Mora MRF266N6C*E26.6 cu ft | $108 |
| 828 | Viking Range,Llc FDBMIC7360L19.4 cu ft | $108 |
| 827 | Miele KFNF 9959 iDE18.9 cu ft | $108 |
| 826 | Liebherr HCB 2091G18.9 cu ft | $108 |
| 825 | Fhiaba S360HST6IU19.4 cu ft | $108 |
Source
ES_1145610_KRFR36PRI_08202024140737_4240664View certified refrigerator listingsENERGY STAR data as of July 2026Hestan and KRFR36PRI 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.