How much does it cost to run a portable air conditioner?
A portable air conditioner drawing 1,200 watts, used 8 hours a day, uses about 9.60 kWh per day and costs about $1.86 per day, $56.72 per month, and $680.13 per year at the US average residential rate of 19.4¢/kWh. Enter your own wattage, hours, and state below for an exact figure.
Estimates only — based on typical wattages and average state rates, not your actual bill.
What drives the cost
A portable AC draws roughly 900-1,800 watts depending on capacity. Single-hose models are notably less efficient than window units of the same BTU rating, because they exhaust conditioned indoor air outside and pull unconditioned replacement air in through gaps in the house. Dual-hose designs avoid most of that penalty. Real consumption is below nameplate because the compressor cycles.
Cost at different daily usage
Same portable air conditioner at 1,200 watts, run for different amounts of time, at 19.4¢/kWh.
| Usage | kWh/day | Per day | Per month | Per year |
|---|---|---|---|---|
| 4 h/day | 4.80 kWh | $0.93 | $28.36 | $340.06 |
| 8 h/day | 9.60 kWh | $1.86 | $56.72 | $680.13 |
| 12 h/day | 14.40 kWh | $2.80 | $85.08 | $1,020.19 |
| 16 h/day | 19.20 kWh | $3.73 | $113.44 | $1,360.25 |
Cost by model power draw
Not all models are equal. At 8 h/day, here is what the range costs.
| Model | Power | kWh/day | Per day | Per month |
|---|---|---|---|---|
| Low-draw model | 900 W | 7.20 kWh | $1.40 | $42.54 |
| Typical | 1,200 W | 9.60 kWh | $1.86 | $56.72 |
| High-draw model | 1,800 W | 14.40 kWh | $2.80 | $85.08 |
Cost by state
A portable air conditioner at 1,200 W for 8 h/day, priced at each state's average residential rate.
| State | Rate | Per day | Per month | Per year |
|---|---|---|---|---|
| Alabama | 16.8¢ | $1.61 | $49.01 | $587.62 |
| Alaska | 28.2¢ | $2.71 | $82.49 | $989.18 |
| Arizona | 15.2¢ | $1.46 | $44.51 | $533.66 |
| Arkansas | 14.4¢ | $1.38 | $41.96 | $503.17 |
| California | 33.2¢ | $3.19 | $97.16 | $1,165.08 |
| Colorado | 16.2¢ | $1.55 | $47.22 | $566.25 |
| Connecticut | 27.4¢ | $2.63 | $79.98 | $959.04 |
| Delaware | 19.4¢ | $1.86 | $56.63 | $679.08 |
| District of Columbia | 25.4¢ | $2.44 | $74.22 | $890.02 |
| Florida | 15.2¢ | $1.46 | $44.33 | $531.56 |
| Georgia | 15.8¢ | $1.52 | $46.29 | $555.03 |
| Hawaii | 52.0¢ | $4.99 | $151.96 | $1,822.08 |
| Idaho | 12.3¢ | $1.19 | $36.09 | $432.74 |
| Illinois | 23.9¢ | $2.29 | $69.70 | $835.70 |
| Indiana | 18.1¢ | $1.74 | $53.04 | $635.98 |
| Iowa | 14.1¢ | $1.36 | $41.32 | $495.47 |
| Kansas | 15.1¢ | $1.45 | $44.21 | $530.16 |
| Kentucky | 15.0¢ | $1.44 | $43.78 | $524.90 |
| Louisiana | 14.2¢ | $1.36 | $41.35 | $495.82 |
| Maine | 28.6¢ | $2.75 | $83.66 | $1,003.20 |
| Maryland | 21.8¢ | $2.09 | $63.62 | $762.82 |
| Massachusetts | 28.8¢ | $2.77 | $84.22 | $1,009.85 |
| Michigan | 22.0¢ | $2.11 | $64.32 | $771.23 |
| Minnesota | 16.9¢ | $1.63 | $49.53 | $593.93 |
| Mississippi | 16.2¢ | $1.55 | $47.22 | $566.25 |
| Missouri | 13.7¢ | $1.31 | $39.98 | $479.35 |
| Montana | 14.7¢ | $1.41 | $42.87 | $514.04 |
| Nebraska | 13.6¢ | $1.30 | $39.71 | $476.19 |
| Nevada | 13.6¢ | $1.31 | $39.74 | $476.54 |
| New Hampshire | 27.3¢ | $2.62 | $79.86 | $957.64 |
| New Jersey | 23.3¢ | $2.23 | $68.00 | $815.38 |
| New Mexico | 14.1¢ | $1.36 | $41.26 | $494.76 |
| New York | 29.9¢ | $2.87 | $87.46 | $1,048.75 |
| North Carolina | 15.1¢ | $1.45 | $44.10 | $528.75 |
| North Dakota | 13.6¢ | $1.31 | $39.77 | $476.89 |
| Ohio | 19.5¢ | $1.87 | $57.04 | $683.98 |
| Oklahoma | 13.4¢ | $1.28 | $39.10 | $468.84 |
| Oregon | 16.3¢ | $1.56 | $47.54 | $570.10 |
| Pennsylvania | 21.6¢ | $2.07 | $62.97 | $755.11 |
| Rhode Island | 29.5¢ | $2.83 | $86.09 | $1,032.28 |
| South Carolina | 16.2¢ | $1.55 | $47.28 | $566.95 |
| South Dakota | 15.7¢ | $1.51 | $45.97 | $551.18 |
| Tennessee | 14.5¢ | $1.39 | $42.28 | $507.03 |
| Texas | 16.4¢ | $1.58 | $48.04 | $576.06 |
| Utah | 13.0¢ | $1.24 | $37.87 | $454.12 |
| Vermont | 24.9¢ | $2.39 | $72.73 | $872.15 |
| Virginia | 17.6¢ | $1.69 | $51.46 | $617.05 |
| Washington | 14.9¢ | $1.44 | $43.69 | $523.85 |
| West Virginia | 16.8¢ | $1.61 | $49.09 | $588.67 |
| Wisconsin | 19.7¢ | $1.90 | $57.69 | $691.69 |
| Wyoming | 14.8¢ | $1.42 | $43.25 | $518.59 |
How to cut the cost
- Choose a dual-hose model if buying — single-hose units create negative pressure that pulls warm air in from outside.
- Seal the window kit properly; leaks around the panel undo much of the cooling.
- Keep the exhaust hose short and straight, and insulate it if it runs through the room.
- Empty or drain condensate as designed — a unit fighting a full reservoir works harder.
Compare with related appliances
Monthly cost at typical usage and 19.4¢/kWh.
Questions
Is a portable AC more expensive to run than a window unit?
Usually yes, for the same cooling. Single-hose portables exhaust indoor air you already paid to cool, so they need more run time to hold a temperature.
How many watts is a 10,000 BTU portable air conditioner?
Roughly 1,100-1,300 watts for most 10,000 BTU units, though efficiency varies. Check the label for your model and enter it above.
How do you calculate what a portable air conditioner costs to run?
Multiply its wattage by the hours it runs per day, divide by 1,000 to get kilowatt-hours, then multiply by your electricity rate. For a portable air conditioner: 1,200 W × 8 h ÷ 1,000 = 9.60 kWh per day, which at 19.4¢/kWh is $1.86 per day.
How many watts does a portable air conditioner use?
Typically 1,200 watts, with most models falling between 900 and 1,800 watts. The label on the appliance or its power supply gives the figure for your specific unit.