Model
Mbm MRF7S
Rank #475 means 474 of the 1,000 refrigerator models we track cost less to run each year; the 36th efficiency percentile means it uses less energy for its size than 36% of those models.
What does the Mbm MRF7S cost to run per year?
Ranking #475 of 1,000, the Mbm MRF7S runs at roughly $62 a year, neither the cheapest nor the priciest in its class. It uses 14% less energy than the U.S. federal standard model in its class, which would cost about $72/yr to run, a saving of roughly $10 a year. Adjusted for size, it is only more efficient than 36% of refrigerator models we track, so part of its running cost comes from its capacity rather than efficiency alone. At 7.4 cu ft, it is a mid-size refrigerator for the class, which runs 1.2 to 31.7 cu ft; size and efficiency are the two levers behind the figure above, and this dataset does not carry a separate efficiency-factor column for this class.
Immediately around it on the leaderboard, the Finlux 463 TMF1436RSS at $62/yr runs a little cheaper and the Mbm MRN14W at $62/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 Mbm MRF7S's $62/yr adds up to roughly $744 in electricity alone, before purchase price or repairs.
By the numbers
The Mbm MRF7S 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 $62/yr, here is what the Mbm MRF7S adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Mbm MRF7S costs about $620. That is roughly $100 less than a standard model in its class, which would run closer to $720 over the same ten years.
How the Mbm MRF7S compares
The refrigerator class we track runs from $8 to $149 a year. At $62/yr, it runs about $2 a year cheaper than the class median of $64, and it is about $54 a year more than the cheapest refrigerator to run at $8. Against the US federal standard model for its class at about $72/yr, the Mbm MRF7S uses 14% less energy.
What drives its running cost
At 7.4 cu ft, the Mbm MRF7S 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.
- 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.
- 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.
- 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 Mbm MRF7S cheap to run?
It is about average. At $62 a year it ranks #475 of 1,000 refrigerator models we track, close to the middle of its class on running cost.
How much does the Mbm MRF7S cost per month?
Roughly $5.13/mo, spreading the $62/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 332 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $62 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Mbm MRF7S for its size?
36th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 474 | Finlux 463 TMF1436RSS14.3 cu ft | $62 |
| 473 | Equator RF142S14.3 cu ft | $62 |
| 472 | Criterion CTMR142C1B14.3 cu ft | $62 |
| 471 | Avanti FF14V0W14.3 cu ft | $62 |
| 470 | Zephyr PRRFD24C2AP3.9 cu ft | $61 |
Source
ES_1143390_MRF7S_111420221928134_7182535View certified refrigerator listingsENERGY STAR data as of July 2026Mbm and MRF7S 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.