Data through June 2026
Running cost · Room Air Conditioners · ENERGY STAR certified
LG LW1222IVSM
Under the DOE test basis of 750 hours a year, the LG LW1222IVSM draws 600 kWh — about $110 at the U.S. average rate, concentrated in the months you actually run it. That's close to the middle of the certified pack — about 13% above the median room air conditioner, ranked 280 of 439. The same unit costs $79 a year in Nevada but $316 in Hawaii — electricity rates, not the appliance, make the difference.
Uses 38% less energy than the U.S. federal minimum
Dimensions 15" H × 23.6" W × 28.8" D, 85 lb
Estimated annual running cost · U.S. average rate 18.3¢/kWh
$110/yr
- Per month
- $9.17
- Per day
- 30¢
- Certified use
- 600 kWh/yr
- Cooling capacity
- 12,000 BTU/hr
- CEER
- 15
- Mounting
- Straddles Window
- Variable-speed compressor
- Yes
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 16.4¢ | $98 | |
| Alaska | 28.2¢ | $169 | |
| Arizona | 15.2¢ | $91 | |
| Arkansas | 14.1¢ | $85 | |
| California | 34.7¢ | $208 | |
| Colorado | 17.1¢ | $103 | |
| Connecticut | 24.3¢ | $146 | |
| Delaware | 19.3¢ | $116 | |
| District of Columbia | 24.4¢ | $146 | |
| Florida | 15.1¢ | $91 | |
| Georgia | 16.4¢ | $98 | |
| Hawaiipriciest | 52.7¢ | $316 | |
| Idaho | 14.4¢ | $86 | |
| Illinois | 19.9¢ | $119 | |
| Indiana | 17.5¢ | $105 | |
| Iowa | 15.9¢ | $96 | |
| Kansas | 15.7¢ | $94 | |
| Kentucky | 14.3¢ | $86 | |
| Louisiana | 13.5¢ | $81 | |
| Maine | 29.6¢ | $178 | |
| Maryland | 21.8¢ | $131 | |
| Massachusetts | 29.6¢ | $178 | |
| Michigan | 23.0¢ | $138 | |
| Minnesota | 17.5¢ | $105 | |
| Mississippi | 14.9¢ | $89 | |
| Missouri | 16.2¢ | $97 | |
| Montana | 15.1¢ | $91 | |
| Nebraska | 13.3¢ | $80 | |
| Nevadacheapest | 13.1¢ | $79 | |
| New Hampshire | 27.0¢ | $162 | |
| New Jersey | 24.9¢ | $150 | |
| New Mexico | 15.1¢ | $90 | |
| New York | 29.5¢ | $177 | |
| North Carolina | 14.7¢ | $88 | |
| North Dakota | 14.1¢ | $85 | |
| Ohio | 19.2¢ | $115 | |
| Oklahoma | 14.3¢ | $86 | |
| Oregon | 16.3¢ | $98 | |
| Pennsylvania | 21.7¢ | $130 | |
| Rhode Island | 29.2¢ | $175 | |
| South Carolina | 15.6¢ | $93 | |
| South Dakota | 15.4¢ | $92 | |
| Tennessee | 14.1¢ | $84 | |
| Texas | 15.9¢ | $96 | |
| Utah | 13.4¢ | $80 | |
| Vermont | 24.4¢ | $147 | |
| Virginia | 17.2¢ | $103 | |
| Washington | 14.9¢ | $89 | |
| West Virginia | 15.4¢ | $93 | |
| Wisconsin | 19.6¢ | $117 | |
| Wyoming | 15.2¢ | $91 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| BLACK+DECKER BD12NWES | 600 | $110 |
| Century RXTS-121A | 600 | $110 |
| Comfort Aire RXTS-121A | 600 | $110 |
| Danby DAC120ECBIWDB | 600 | $110 |
| DELLA 048-TL-W12KI | 600 | $110 |
| ELEMENT EHWR12BE | 600 | $110 |
Run your own numbers
Your rate, your numbers
- Per day
- 30¢
- Per month
- $9.17
- Per year
- $110
600 kWh/yr × 18.3¢/kWh = $110/yr
Prefilled with this model's certified 600 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 LW1222IVSM use?
- ENERGY STAR certifies the LG LW1222IVSM at 600 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 LW1222IVSM cost to run per month?
- About $9.17 a month at the U.S. average residential rate (18.3¢/kWh) — 30¢ a day, or $110 a year. Your state's rate moves this up or down; see the table above.
- Is the LG LW1222IVSM energy efficient?
- It uses 13% more electricity than the median certified room air conditioner.
- What does the LG LW1222IVSM cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $79 a year in Nevada (13.1¢/kWh) and $316 in Hawaii (52.7¢/kWh).