What the Sub-Zero CL3650R**/S/*/* costs to run
The Sub-Zero CL3650R**/S/*/* is certified by ENERGY STAR at 370 kWh a year, about average for its category to run among refrigerators currently certified.
The $70 figure above uses the simple average of all 51 published state rates. Pick your state for the real number.
Sub-Zero CL3650R**/S/*/* against the category
That's 4.1% below the refrigerator category average of 386 kWh/yr, and ranks 2,721 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 $3/year below that average at the national rate. See the methodology page.
What sits beside it in the ranking
Summit BF249SS ($70/yr, 370 kWh/yr) costs a little more to run than the Sub-Zero CL3650R**/S/*/*. Miele KFN 4799 DDE edt/cs ($70/yr, 370 kWh/yr) costs a little less.
Within the Sub-Zero lineup
Sub-Zero makes 26 ENERGY STAR certified refrigerators; this one ranks 16 of 26 for running cost, between the brand's cheapest, the DEU2450R/ADA/* at $30/yr, and its priciest, the CL4850S/S/* at $140/yr.
What this adds up to over time
Over the 13-year service life NAHB reports for this category, running the Sub-Zero CL3650R**/S/*/* costs roughly $904 in electricity, separate from the purchase price.
Is it worth replacing?
The Sub-Zero CL3650R**/S/*/* is already efficient for its category at $70/year. If you're shopping and comparing options, this is roughly what a well-chosen new refrigerator costs to run.
Compare current ENERGY STAR certified refrigerators before buying.
Protecting what you have
A refrigerator like the Sub-Zero CL3650R**/S/*/* 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.
Sourcing
Ranked 2,721 of 4,704, the Sub-Zero CL3650R**/S/*/* 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. The 370 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.