DELLA 048-TL-W12KI: running cost
ENERGY STAR certifies the DELLA 048-TL-W12KI at 600 kWh/yr, about average for its category to run for its category.
That $113 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 DELLA 048-TL-W12KI compares to other room air conditioners
Against the category average of 603 kWh/yr, this model uses 0.5% less, ranking 265 of 447 room air conditioners tracked here for running cost. 447 certified room air conditioners, one average, about $1/year of daylight between it and this model; the full methodology has the rest.
Neighbouring models
Right next to the DELLA 048-TL-W12KI on that list: Danby DAC120ECBIWDB ($113/yr, 600 kWh/yr) runs slightly less, while ELEMENT EHWR12BE ($113/yr, 600 kWh/yr) runs slightly more.
Comparing DELLA's own models
Of the 3 ENERGY STAR certified room air conditioners DELLA makes, the 048-TL-W12KI costs the most to run, $38/year more than DELLA's cheapest, the 048-TL-W8KI.
What this adds up to over time
Over the 10-year service life NAHB reports for this category, running the DELLA 048-TL-W12KI costs roughly $1,128 in electricity, separate from the purchase price.
Is it worth replacing?
Efficient as certified room air conditioners go, $113/year is a reasonable baseline if you're comparing what else is on the market.
Compare current ENERGY STAR certified room air conditioners before buying.
If you're keeping it
The DELLA 048-TL-W12KI already costs $113/year to run; a repair bill on top of that is the kind of expense a protection plan exists to smooth out.
How this was checked
Two sourced numbers, nothing modeled: ENERGY STAR's certified kWh/yr for this exact model, and EIA's published state electricity rate. Ranked 265 of 447, the DELLA 048-TL-W12KI sits in the middle of the room air conditioner category, see the guide to why your state changes this number for the other half of the math.