Century RXTS-121A Running Cost (Room Air Conditioner)
Running cost for the Century RXTS-121A
The Century RXTS-121A is certified by ENERGY STAR at 600 kWh a year, about average for its category to run among room air conditioners currently certified.
The $113 figure above uses the simple average of all 51 published state rates. Pick your state for the real number.
Century RXTS-121A against the category
That's 0.5% below the room air conditioner category average of 603 kWh/yr, and ranks 262 of 447 certified room air conditioners for annual running cost, 1 being cheapest. The category average comes from every room air conditioner ENERGY STAR currently certifies (447 models), not an outside benchmark, about $1/year below that average at the national rate. See the methodology page.
What sits beside it in the ranking
Comfort Aire RXTS-121A ($113/yr, 600 kWh/yr) costs a little more to run than the Century RXTS-121A. BLACK+DECKER BD12NWES ($113/yr, 600 kWh/yr) costs a little less.
Within the Century lineup
Among Century's 3 certified room air conditioners, this is the priciest to run, $38/year over the RXTS-81A, the brand's cheapest.
What this adds up to over time
NAHB's Study of Life Expectancy of Home Components puts a typical room air conditioner's service life at 10 years; run the Century RXTS-121A that long and it costs about $1,128 in electricity, on top of whatever it cost to buy.
Shopping for a new one
The Century RXTS-121A is already efficient for its category at $113/year. If you're shopping and comparing options, this is roughly what a well-chosen new room air conditioner costs to run.
Compare current ENERGY STAR certified room air conditioners before buying.
Protecting what you have
A room air conditioner like the Century RXTS-121A 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
Two sourced numbers, nothing modeled: ENERGY STAR's certified kWh/yr for this exact model, and EIA's published state electricity rate. At rank 262 of 447 for running cost, see the room air conditioner category page for the rest of the field, or the guide to how much your state matters.