Model
Elisii DERTM181*W3
Rank #578 means 577 of the 1,000 refrigerator models we track cost less to run each year; the 88th efficiency percentile means it uses less energy for its size than 88% of those models.
What does the Elisii DERTM181*W3 cost to run per year?
Among the 1,000 refrigerator models we track, the Elisii DERTM181*W3's $68/yr running cost ranks it #578, close to dead center. It uses 10% less energy than the U.S. federal standard model in its class, which would cost about $76/yr to run, a saving of roughly $8 a year. Its size-adjusted efficiency percentile of 88 means the low running cost is not just a function of size; it is genuinely efficient for its class. This class has no published efficiency-factor figure beyond annual kWh itself, so at 18.1 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 Conservator GRMH185A* at $68/yr runs a little cheaper and the Frigidaire FFHT1835X* at $68/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 Elisii DERTM181*W3's $68/yr adds up to roughly $816 in electricity alone, before purchase price or repairs.
Also sold as: Conservator GRMH185A*.
By the numbers
The Elisii DERTM181*W3 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 $68/yr, here is what the Elisii DERTM181*W3 adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Elisii DERTM181*W3 costs about $680. That is roughly $80 less than a standard model in its class, which would run closer to $760 over the same ten years.
How the Elisii DERTM181*W3 compares
The refrigerator class we track runs from $8 to $149 a year. At $68/yr, it runs about $4 a year above the class median of $64, and it is about $60 a year more than the cheapest refrigerator to run at $8. Against the US federal standard model for its class at about $76/yr, the Elisii DERTM181*W3 uses 10% less energy.
What drives its running cost
At 18.1 cu ft, the Elisii DERTM181*W3 is a large refrigerator for its class, which spans 1.2 to 31.7 cu ft with a median of 12.6 cu ft, and larger refrigerator models generally cost more to run than smaller ones in the same class, simply because there is more to keep cold, spin, heat, or light.
- 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 Elisii DERTM181*W3 cheap to run?
Roughly, yes. Its $68/yr figure is close to the class median, ranking #578 of 1,000, neither a bargain nor a splurge on running cost.
How much does the Elisii DERTM181*W3 cost per month?
About $5.71 a month, which is the $68 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: 369 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $68 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Elisii DERTM181*W3 for its size?
88th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 578 | Conservator GRMH185A*18.1 cu ft | $68 |
| 577 | Sh SH513-WW18.1 cu ft | $68 |
| 576 | Marathon MFF184SS18.1 cu ft | $68 |
| 575 | Hisense RT180N3S*EH18.1 cu ft | $68 |
| 574 | Commercial Cool CCR1800GW18.2 cu ft | $68 |
Source
ES_1142511_DERTM181*W3_080720240834443_6283201View certified refrigerator listingsENERGY STAR data as of July 2026Elisii and DERTM181*W3 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.