Keystone KSTAW101WA Running Cost (Room Air Conditioner)
What the Keystone KSTAW101WA costs to run
At 500 kWh/yr, the Keystone KSTAW101WA's ENERGY STAR certification puts it cheaper than most models in its category to run against every other certified room air conditioner.
That $94 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.
Efficient, or not, for a room air conditioner
Against the category average of 603 kWh/yr, this model uses 17.1% less, ranking 179 of 447 room air conditioners tracked here for running cost. That average is drawn from all 447 room air conditioners ENERGY STAR currently certifies, not an outside number, a $19/year gap from this model at the national rate. Full sourcing is in the sourcing notes.
Right next to it on the list
A rank or two either side of the Keystone KSTAW101WA: Keplerx KARC10RSVE1 ($94/yr, 500 kWh/yr), then Keystone KSTAW10INV ($94/yr, 500 kWh/yr).
Same brand, different models
Ranked 4 of Keystone's 11 certified room air conditioners, this sits between the KSTAW081WA ($75/yr, the brand's cheapest) and the KSTAW242WA ($254/yr, its priciest).
What this adds up to over time
10 years is NAHB's typical service life for this category; at $94/year, the Keystone KSTAW101WA adds up to about $940 in electricity over that span.
Weighing a replacement
Efficient as certified room air conditioners go, $94/year is a reasonable baseline if you're comparing what else is on the market.
See what else is certified in this category before you decide.
If you're keeping it
Whether or not the Keystone KSTAW101WA ever needs replacing, a repair is the more common failure for a room air conditioner, one a protection plan budgets for ahead of time.
Where this number comes from
Two sourced numbers, nothing modeled: ENERGY STAR's certified kWh/yr for this exact model, and EIA's published state electricity rate. At rank 179 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.