Running cost for the Marathon M4-100SS
The Marathon M4-100SS is certified by ENERGY STAR at 134 kWh a year, one of the cheaper models in its category to run among refrigerators currently certified.
That $25 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.
How the Marathon M4-100SS compares to other refrigerators
Against the category average of 386 kWh/yr, this model uses 65.3% less, ranking 62 of 4,704 refrigerators tracked here for running cost. 4,704 certified refrigerators, one average, about $47/year of daylight between it and this model; the full methodology has the rest.
Neighbouring models
Right next to the Marathon M4-100SS on that list: Marathon M4-100PANR ($25/yr, 134 kWh/yr) runs slightly less, while Marathon M4-150BLS ($25/yr, 134 kWh/yr) runs slightly more.
Within the Marathon lineup
Ranked 3 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).
Marathon M4-100SS over 13 years
Over the 13-year service life NAHB reports for this category, running the Marathon M4-100SS costs roughly $327 in electricity, separate from the purchase price.
Is it worth replacing?
Efficient as certified refrigerators go, $25/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
A refrigerator like the Marathon M4-100SS is a real household expense whether or not it needs replacing yet; a protection plan is one way to budget for a repair rather than a full replacement.
How this was checked
At rank 62 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. The 134 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.