Running cost for the Marathon MFF182W
The Marathon MFF182W is certified by ENERGY STAR at 358 kWh a year, about average for its category to run among refrigerators currently certified.
That $67 is priced at 18.8¢/kWh, the average of all 51 state rates this site tracks. Your own state's rate is one click away.
Efficient, or not, for a refrigerator
Against the category average of 386 kWh/yr, this model uses 7.3% less, ranking 2,465 of 4,704 refrigerators tracked here for running cost. That average is drawn from all 4,704 refrigerators ENERGY STAR currently certifies, not an outside number, a $5/year gap from this model at the national rate. Full sourcing is in the sourcing notes.
Right next to it on the list
A rank or two either side of the Marathon MFF182W: Marathon MFF182SS ($67/yr, 358 kWh/yr), then Monogram ZIR361NBR**** ($67/yr, 358 kWh/yr).
Comparing Marathon's own models
Ranked 34 of Marathon's 57 certified refrigerators, this sits between the M4-100BLS ($25/yr, the brand's cheapest) and the MFF208WFD-2 ($87/yr, its priciest).
Cost over its typical lifespan
NAHB's Study of Life Expectancy of Home Components puts a typical refrigerator's service life at 13 years; run the Marathon MFF182W that long and it costs about $875 in electricity, on top of whatever it cost to buy.
Is it worth replacing?
Efficient as certified refrigerators go, $67/year is a reasonable baseline if you're comparing what else is on the market.
See what else is certified in this category before you decide.
If you're keeping it
Whether or not the Marathon MFF182W ever needs replacing, a repair is the more common failure for a refrigerator, one a protection plan budgets for ahead of time.
Where this number comes from
Two sourced numbers, nothing modeled: ENERGY STAR's certified kWh/yr for this exact model, and EIA's published state electricity rate. At rank 2,465 of 4,704 for running cost, see the refrigerator category page for the rest of the field, or the guide to how much your state matters.