Cost to Run a Window Air Conditioner in Missouri
Missouri's average residential electricity rate is 14¢/kWh as of April 2026 — the 8th cheapest in the country, 26% below the U.S. average. At typical usage (8 hours/day), a window air conditioner here costs $30.64 per month.
Per hour
$0.13
at 500–1,500 W
Per day
$1.01
8 hours/day
Per month
$30.64
219 kWh
Per year
$368
2,628 kWh
By usage level in Missouri
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.50 | $15.32 | $184 |
| Typical (8 hrs/day) | $1.01 | $30.64 | $368 |
| Heavy (16 hrs/day) | $2.02 | $61.29 | $736 |
Missouri 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 Missouri?
At Missouri's current average residential rate of 14¢/kWh (April 2026), a window air conditioner with typical usage costs about $1.01 per day, $30.64 per month, or $368 per year.
Is running a window air conditioner in Missouri more expensive than average?
No — it's cheaper. Missouri's rate is about 26% below the U.S. average: $30.64 per month here versus $41.15 nationally.
What does electricity cost in Missouri right now?
Missouri residents pay an average of 14¢ per kWh as of April 2026 — the 8th cheapest rate of the 51 U.S. jurisdictions we track.