Model
Fhiaba KS300TST6IU
Rank #782 means 781 of the 1,000 refrigerator models we track cost less to run each year; the 40th efficiency percentile means it uses less energy for its size than 40% of those models.
What does the Fhiaba KS300TST6IU cost to run per year?
Do the math and the Fhiaba KS300TST6IU's $100/yr puts it at rank #782 of 1,000, on the pricier side of the class. It uses 11% less energy than the U.S. federal standard model in its class, which would cost about $110/yr to run, a saving of roughly $10 a year. Normalized for capacity, it beats 40% of refrigerator models we track, an average result for the class. It is a counter-depth model, built shallower to sit flush with kitchen cabinets, a design choice that typically trades away some interior volume (and so some running-cost headroom) for the built-in look.
Immediately around it on the leaderboard, the Black+Decker BRF1800GIMS at $100/yr runs a little cheaper and the Galanz GLR18F**S16 at $100/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 Fhiaba KS300TST6IU's $100/yr adds up to roughly $1200 in electricity alone, before purchase price or repairs.
Also sold as: Bertazzoni REF30BMBIPLT.
By the numbers
The Fhiaba KS300TST6IU 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 $100/yr, here is what the Fhiaba KS300TST6IU adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Fhiaba KS300TST6IU costs about $1000. That is roughly $100 less than a standard model in its class, which would run closer to $1100 over the same ten years.
How the Fhiaba KS300TST6IU compares
The refrigerator class we track runs from $8 to $149 a year. At $100/yr, it runs about $36 a year above the class median of $64, and it is about $92 a year more than the cheapest refrigerator to run at $8. Against the US federal standard model for its class at about $110/yr, the Fhiaba KS300TST6IU uses 11% less energy.
What drives its running cost
At 15.5 cu ft, the Fhiaba KS300TST6IU 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, right in the middle of the capacity range, so capacity is roughly a wash compared with the rest of the class.
- Counter depth vs standard depth. Counter-depth models sit flush with cabinets but usually hold less interior volume than a standard-depth model of the same width, which can nudge the per-cubic-foot running cost either way.
- Interior volume. Cubic feet of interior volume is the first thing that scales a fridge's running cost up or down, before compressor quality even enters the picture.
- Compressor technology. Newer variable-speed (inverter) compressors modulate output instead of cycling fully on and off, which tends to use less energy for the same cooling job than an older fixed-speed compressor.
- Placement and ventilation. A fridge pushed tight against a wall or cabinet, or standing next to an oven or in direct sun, works harder to shed the heat its compressor produces, which can push real-world cost above the published figure.
Common questions
Is the Fhiaba KS300TST6IU cheap to run?
Not especially. At $100 a year it ranks #782 of 1,000 refrigerator models we track, in the pricier part of its class to run, though its size and features may still justify that for your needs.
How much does the Fhiaba KS300TST6IU cost per month?
Roughly $8.35/mo, spreading the $100/yr estimate evenly across twelve months at $0.1856/kWh. Actual monthly bills swing with your rate and usage pattern.
How is this running-cost figure calculated?
We take the model's published annual energy use of 540 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $100 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Fhiaba KS300TST6IU for its size?
40th 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
Source
KS300TST6IUView certified refrigerator listingsENERGY STAR data as of July 2026Fhiaba and KS300TST6IU 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.