What the Marathon MFF115***** costs to run
ENERGY STAR certifies the Marathon MFF115***** at 397 kWh/yr, about average for its category to run for its category.
The $75 figure above uses the simple average of all 51 published state rates. Pick your state for the real number.
Marathon MFF115***** against the category
That's 2.8% above the refrigerator category average of 386 kWh/yr, and ranks 2,914 of 4,704 certified refrigerators for annual running cost, 1 being cheapest. The category average comes from every refrigerator ENERGY STAR currently certifies (4,704 models), not an outside benchmark, about $2/year above that average at the national rate. See the methodology page.
What sits beside it in the ranking
Marathon MFF115SSBM ($75/yr, 397 kWh/yr) costs a little more to run than the Marathon MFF115*****. KitchenAid KBWG11NCSS ($75/yr, 397 kWh/yr) costs a little less.
Same brand, different models
Marathon makes 57 ENERGY STAR certified refrigerators; this one ranks 37 of 57 for running cost, between the brand's cheapest, the M4-100BLS at $25/yr, and its priciest, the MFF208WFD-2 at $87/yr.
Marathon MFF115***** over 13 years
13 years is NAHB's typical service life for this category; at $75/year, the Marathon MFF115***** adds up to about $970 in electricity over that span.
Is it worth replacing?
The Marathon MFF115***** is already efficient for its category at $75/year. If you're shopping and comparing options, this is roughly what a well-chosen new refrigerator costs to run.
Worth comparing a few current certified models before deciding.
Protecting what you have
Whether or not the Marathon MFF115***** ever needs replacing, a repair is the more common failure for a refrigerator, one a protection plan budgets for ahead of time.
Sourcing
Nothing here is estimated from a nameplate wattage; the 397 kWh/yr is ENERGY STAR's own certified figure for this model. Ranked 2,914 of 4,704, the Marathon MFF115***** sits in the middle of the refrigerator category, see the guide to why your state changes this number for the other half of the math.