Appliances / Window air conditioners / Keystone
Keystone window air conditioners ranked by running cost
11 ENERGY STAR certified Keystone models, cheapest to run first, at the U.S. average electricity price.
| Model | Type | Size | Per year | 10 years |
|---|---|---|---|---|
| KSTAW081WA | Window | 8000 BTU | $73 | $728 |
| KSTAW08INV | Window | 8000 BTU | $73 | $728 |
| KSTAW08INV-HC | Window | 8000 BTU | $75 | $753 |
| KSTAW101WA | Window | 10000 BTU | $91 | $910 |
| KSTAW10INV | Window | 10000 BTU | $91 | $910 |
| KSTAW121WA | Window | 12000 BTU | $109 | $1,091 |
| KSTAW12INV | Window | 12000 BTU | $109 | $1,091 |
| KSTAW12INV-HC | Window | 12000 BTU | $123 | $1,231 |
| KSTAW141WA | Window | 14000 BTU | $127 | $1,273 |
| KSTAW182WA | Window | 18000 BTU | $164 | $1,637 |
| KSTAW242WA | Window | 24000 BTU | $246 | $2,461 |