Running cost for the Marathon M4-100BLS
The Marathon M4-100BLS is certified by ENERGY STAR at 134 kWh a year, one of the cheaper models in its category to run among refrigerators currently certified.
The $25 figure above uses the simple average of all 51 published state rates. Pick your state for the real number.
Marathon M4-100BLS against the category
That's 65.3% below the refrigerator category average of 386 kWh/yr, and ranks 60 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 $47/year below that average at the national rate. See the methodology page.
What sits beside it in the ranking
Marathon M4-100PANR ($25/yr, 134 kWh/yr) costs a little more to run than the Marathon M4-100BLS. U-Line UR*D#24-*S#1A ($24/yr, 130 kWh/yr) costs a little less.
Within the Marathon lineup
Marathon sells 57 certified refrigerators; this one runs cheapest of them, $61/year under the MFF208WFD-2, its priciest.
Cost over its typical lifespan
Over the 13-year service life NAHB reports for this category, running the Marathon M4-100BLS costs roughly $327 in electricity, separate from the purchase price.
Is it worth replacing?
The Marathon M4-100BLS is already efficient for its category at $25/year. If you're shopping and comparing options, this is roughly what a well-chosen new refrigerator costs to run.
See what else is certified in this category before you decide.
Protecting what you have
At $25/year just to run, a refrigerator is worth protecting against an unplanned repair bill on top of that.
Sourcing
The full Refrigerator category page shows all 4,704 refrigerators ranked by cost; the state-rate guide covers the half of this number that isn't the appliance. The 134 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.