Cost to Run a Window Air Conditioner in Colorado
Colorado's average residential electricity rate is 16.2¢/kWh as of May 2026 — the 23rd cheapest in the country, 12% below the U.S. average. At typical usage (8 hours/day), a window air conditioner here costs $35.46 per month.
Per hour
$0.15
at 500–1,500 W
Per day
$1.17
8 hours/day
Per month
$35.46
219 kWh
Per year
$426
2,628 kWh
By usage level in Colorado
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.58 | $17.73 | $213 |
| Typical (8 hrs/day) | $1.17 | $35.46 | $426 |
| Heavy (16 hrs/day) | $2.33 | $70.92 | $851 |
Colorado vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a window air conditioner in Colorado?
At Colorado's current average residential rate of 16.2¢/kWh (May 2026), a window air conditioner with typical usage costs about $1.17 per day, $35.46 per month, or $426 per year.
Is running a window air conditioner in Colorado more expensive than average?
No — it's cheaper. Colorado's rate is about 12% below the U.S. average: $35.46 per month here versus $40.27 nationally.
What does electricity cost in Colorado right now?
Colorado residents pay an average of 16.2¢ per kWh as of May 2026 — the 23rd cheapest rate of the 51 U.S. jurisdictions we track.