Cost to Run a Central Air Conditioner in Maryland
Maryland's average residential electricity rate is 21.8¢/kWh as of May 2026 — the 37th cheapest in the country, 18% above the U.S. average. At typical usage (8 hours/day), a central air conditioner here costs $186 per month.
Per hour
$0.76
at 2,000–5,000 W
Per day
$6.10
8 hours/day
Per month
$186
851 kWh
Per year
$2,228
10,220 kWh
By usage level in Maryland
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $3.05 | $92.78 | $1,114 |
| Typical (8 hrs/day) | $6.10 | $186 | $2,228 |
| Heavy (16 hrs/day) | $12.21 | $371 | $4,456 |
Maryland vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a central air conditioner in Maryland?
At Maryland's current average residential rate of 21.8¢/kWh (May 2026), a central air conditioner with typical usage costs about $6.10 per day, $186 per month, or $2,228 per year.
Is running a central air conditioner in Maryland more expensive than average?
Yes. Maryland's electricity costs about 18% more than the U.S. average, so the same usage costs $186 per month here versus $157 nationally.
What does electricity cost in Maryland right now?
Maryland residents pay an average of 21.8¢ per kWh as of May 2026 — the 37th cheapest rate of the 51 U.S. jurisdictions we track.