Running cost for the Keystone KSTAW08INV-HC
ENERGY STAR certifies the Keystone KSTAW08INV-HC at 413.8 kWh/yr, one of the cheaper models in its category to run for its category.
The $78 figure above uses the simple average of all 51 published state rates. Pick your state for the real number.
Keystone KSTAW08INV-HC against the category
That's 31.4% below the room air conditioner category average of 603 kWh/yr, and ranks 125 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 $36/year below that average at the national rate. See the methodology page.
What sits beside it in the ranking
Midea MAW08HV1CWT ($78/yr, 413.8 kWh/yr) costs a little more to run than the Keystone KSTAW08INV-HC. Friedrich KCVS08B10A ($77/yr, 407.8 kWh/yr) costs a little less.
Same brand, different models
Keystone makes 11 ENERGY STAR certified room air conditioners; this one ranks 3 of 11 for running cost, between the brand's cheapest, the KSTAW081WA at $75/yr, and its priciest, the KSTAW242WA at $254/yr.
Cost over its typical lifespan
10 years is NAHB's typical service life for this category; at $78/year, the Keystone KSTAW08INV-HC adds up to about $778 in electricity over that span.
Weighing a replacement
The Keystone KSTAW08INV-HC is already efficient for its category at $78/year. If you're shopping and comparing options, this is roughly what a well-chosen new room air conditioner costs to run.
See what else is certified in this category before you decide.
Protecting what you have
Whether or not the Keystone KSTAW08INV-HC ever needs replacing, a repair is the more common failure for a room air conditioner, one a protection plan budgets for ahead of time.
Sourcing
Nothing here is estimated from a nameplate wattage; the 413.8 kWh/yr is ENERGY STAR's own certified figure for this model. Ranked 125 of 447, the Keystone KSTAW08INV-HC 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.