Model
Beko BFFD3634ESS
Rank #799 means 798 of the 1,000 refrigerator models we track cost less to run each year; the 71st efficiency percentile means it uses less energy for its size than 71% of those models.
What does the Beko BFFD3634ESS cost to run per year?
The Beko BFFD3634ESS costs about $103 a year to run, more than most of the 1,000 refrigerator models we track; it ranks #799. It uses 27% less energy than the U.S. federal standard model in its class, which would cost about $135/yr to run, a saving of roughly $32 a year. Capacity-normalized, it ranks ahead of 71% of refrigerator models we track, a reasonably strong result for the class. This class has no published efficiency-factor figure beyond annual kWh itself, so at 21.8 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 Bertazzoni REF35FDBZPN2V at $102/yr runs a little cheaper and the Maytag MBF1953DE* at $103/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 Beko BFFD3634ESS's $103/yr adds up to roughly $1236 in electricity alone, before purchase price or repairs.
By the numbers
The Beko BFFD3634ESS 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 $103/yr, here is what the Beko BFFD3634ESS adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Beko BFFD3634ESS costs about $1030. That is roughly $320 less than a standard model in its class, which would run closer to $1350 over the same ten years.
How the Beko BFFD3634ESS compares
The refrigerator class we track runs from $8 to $149 a year. At $103/yr, it runs about $39 a year above the class median of $64, and it is about $95 a year more than the cheapest refrigerator to run at $8. Against the US federal standard model for its class at about $135/yr, the Beko BFFD3634ESS uses 27% less energy.
What drives its running cost
At 21.8 cu ft, the Beko BFFD3634ESS is a large refrigerator for its class, which spans 1.2 to 31.7 cu ft with a median of 12.6 cu ft, among refrigerator models, bigger capacity is the most common reason a running-cost figure lands on the high side, 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 Beko BFFD3634ESS cheap to run?
Its $103/yr running cost, rank #799 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 Beko BFFD3634ESS cost per month?
About $8.55 a month, which is the $103 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: 553 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $103 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Beko BFFD3634ESS for its size?
71st 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 |
|---|---|---|
| 798 | Bertazzoni REF35FDBZPN2V15.5 cu ft | $102 |
| 797 | Elica ER30SRB161PR-R16 cu ft | $102 |
| 796 | Seasons MSBF18****18.7 cu ft | $102 |
| 795 | Liebherr CBS 2092G18.9 cu ft | $102 |
| 794 | Fhiaba KS360TST3IU19.6 cu ft | $102 |
Source
ES_1036108_BFFD3634ESS_121720251335684_8263986View certified refrigerator listingsENERGY STAR data as of July 2026Beko and BFFD3634ESS 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.