Data through April 2026
Running cost · Room Air Conditioners · ENERGY STAR certified
LG LW1822IVSM
The LG LW1822IVSM is certified at 918 kWh per year (based on 750 standardized hours), roughly $173 at the national average — though seasonal use means your real bill lands in a few months, not twelve. Even among certified models it's on the thirsty end: 73% more electricity than the median room air conditioner, ranked 354 of 396. The same unit costs $113 a year in North Dakota but $428 in Hawaii — electricity rates, not the appliance, make the difference.
Estimated annual running cost · U.S. average rate 18.8¢/kWh
$173/yr
- Per month
- $14.41
- Per day
- 47¢
- Certified use
- 918 kWh/yr
- Cooling capacity
- 18,000 BTU/hr
- CEER
- 14.7
- Mounting
- Does Not Straddle Window or Windowsill
- Variable-speed compressor
- Yes
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 17.4¢ | $160 | |
| Alaska | 27.4¢ | $251 | |
| Arizona | 15.5¢ | $142 | |
| Arkansas | 14.2¢ | $130 | |
| California | 35.3¢ | $324 | |
| Colorado | 16.5¢ | $152 | |
| Connecticut | 32.2¢ | $296 | |
| Delaware | 18.8¢ | $173 | |
| District of Columbia | 25.4¢ | $233 | |
| Florida | 15.4¢ | $141 | |
| Georgia | 15.4¢ | $141 | |
| Hawaiipriciest | 46.6¢ | $428 | |
| Idaho | 12.7¢ | $117 | |
| Illinois | 20.5¢ | $188 | |
| Indiana | 17.9¢ | $164 | |
| Iowa | 13.9¢ | $127 | |
| Kansas | 15.8¢ | $145 | |
| Kentucky | 15.0¢ | $138 | |
| Louisiana | 14.4¢ | $133 | |
| Maine | 28.4¢ | $261 | |
| Maryland | 22.1¢ | $203 | |
| Massachusetts | 29.4¢ | $270 | |
| Michigan | 21.4¢ | $196 | |
| Minnesota | 16.4¢ | $151 | |
| Mississippi | 16.8¢ | $154 | |
| Missouri | 14.0¢ | $129 | |
| Montana | 13.9¢ | $128 | |
| Nebraska | 13.3¢ | $122 | |
| Nevada | 14.3¢ | $131 | |
| New Hampshire | 27.2¢ | $250 | |
| New Jersey | 23.5¢ | $216 | |
| New Mexico | 15.2¢ | $139 | |
| New York | 29.4¢ | $270 | |
| North Carolina | 16.3¢ | $149 | |
| North Dakotacheapest | 12.3¢ | $113 | |
| Ohio | 19.5¢ | $179 | |
| Oklahoma | 13.3¢ | $122 | |
| Oregon | 15.8¢ | $145 | |
| Pennsylvania | 21.5¢ | $197 | |
| Rhode Island | 28.3¢ | $260 | |
| South Carolina | 17.1¢ | $157 | |
| South Dakota | 14.5¢ | $133 | |
| Tennessee | 14.9¢ | $137 | |
| Texas | 17.0¢ | $156 | |
| Utah | 13.3¢ | $122 | |
| Vermont | 24.6¢ | $226 | |
| Virginia | 17.4¢ | $160 | |
| Washington | 14.4¢ | $132 | |
| West Virginia | 16.1¢ | $147 | |
| Wisconsin | 19.2¢ | $176 | |
| Wyoming | 14.7¢ | $135 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| Frigidaire FHWW185WE2 | 900 | $169 |
| Hisense AW1823TW3W | 900 | $169 |
| Keplerx KBRC18RSVE2 | 900 | $169 |
| Keystone KSTAW182WA | 900 | $169 |
| Midea MAW18R2VWT | 900 | $169 |
| Midea MAW18RV1CWT | 900 | $169 |
Run your own numbers
Your rate, your numbers
- Per day
- 47¢
- Per month
- $14.40
- Per year
- $173
918 kWh/yr × 18.8¢/kWh = $173/yr
Prefilled with this model's certified 918 kWh/yr — adjust if your usage differs from the DOE test basis. The certified annual kWh assumes 750 cooling hours per year (the DOE standard). In hot climates real usage can run well above that; in mild ones, below.
Questions, answered with the data
- How much electricity does the LG LW1822IVSM use?
- ENERGY STAR certifies the LG LW1822IVSM at 918 kWh per year. The certified annual kWh assumes 750 cooling hours per year (the DOE standard). In hot climates real usage can run well above that; in mild ones, below.
- How much does the LG LW1822IVSM cost to run per month?
- About $14.41 a month at the U.S. average residential rate (18.8¢/kWh) — 47¢ a day, or $173 a year. Your state's rate moves this up or down; see the table above.
- Is the LG LW1822IVSM energy efficient?
- It uses 73% more electricity than the median certified room air conditioner, which puts it among the least efficient certified models.
- What does the LG LW1822IVSM cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $113 a year in North Dakota (12.3¢/kWh) and $428 in Hawaii (46.6¢/kWh).