Data through April 2026
Cost to run · Maryland · 22.1¢/kWh residential average
How much does it cost to run a room air conditioner in Maryland?
$117/yr · median certified model
Maryland pays 22.1¢/kWh for residential power — 17% above the national average — lifting the median certified room air conditioner to about $117 a year, versus $100 nationally.
In the national ranking, Maryland lands at 39 of 51 for what a room air conditioner costs to run. At local rates, certified models span $60 (TCL T05WV9M) to $463 (Friedrich KCVL36B30A) per year — $402 of annual headroom that depends entirely on which unit you buy. For reference, the national extremes are North Dakota (12.3¢/kWh) and Hawaii (46.6¢/kWh); the same median room air conditioner would cost $66 and $248 a year there.
The cheapest room air conditioners to run at Maryland rates
| # | Model | kWh/yr | $/yr in MD |
|---|---|---|---|
| 1 | TCL T05WV9M | 274 | $60 |
| 2 | TCL T05WV9MB | 274 | $60 |
| 3 | TCL T05WV9R | 274 | $60 |
| 4 | TCL T05WV9RB | 274 | $60 |
| 5 | TCL W5WC72 | 274 | $60 |
| 6 | TCL W5WC72-B | 274 | $60 |
| 7 | TCL W5WC72M | 274 | $60 |
| 8 | TCL W5WC72M-B | 274 | $60 |
| 9 | LG LW6023IVSMmost efficient | 290 | $64 |
| 10 | Midea MAW06U1QWTmost efficient | 298 | $66 |
Price any model at Maryland rates
Your rate, your numbers
- Per day
- 32¢
- Per month
- $9.78
- Per year
- $117
532 kWh/yr × 22.1¢/kWh = $117/yr
Prefilled with the median certified room air conditioner (532 kWh/yr). Every model page on this site carries its exact certified figure.
Questions, answered with the data
- How much does it cost to run a room air conditioner in Maryland?
- About $117 a year for the median ENERGY STAR certified room air conditioner, at Maryland's average residential rate of 22.1¢/kWh — that's $9.78 a month.
- Is electricity expensive in Maryland?
- Maryland's residential average of 22.1¢/kWh is 17% above the U.S. average of 18.8¢/kWh, ranking 39 of 51 jurisdictions (1 = cheapest).
- What's the cheapest room air conditioner to run in Maryland?
- Among currently certified models, the TCL T05WV9M costs the least at about $60 a year at Maryland rates (274 kWh/yr).
- How does Maryland compare with other states?
- The same median room air conditioner costs $66 a year in North Dakota (the cheapest state) and $248 in Hawaii (the priciest). Maryland sits at $117.
Keep digging
- All certified room air conditioners compared
- Room Air Conditioners costs in Michigan (rank 37 of 51)
- Room Air Conditioners costs in Pennsylvania (rank 38 of 51)
- Room Air Conditioners costs in New Jersey (rank 40 of 51)
- Room Air Conditioners costs in Vermont (rank 41 of 51)
- Running an air purifier in Maryland
- Running a clothes dryer in Maryland
- Running a clothes washer in Maryland
- Running a computer monitor in Maryland
Rate source: US EIA, average residential price of electricity, see methodology.