Data through April 2026
Running cost · Room Air Conditioners · ENERGY STAR certified
TCL H15W4KW
Under the DOE test basis of 750 hours a year, the TCL H15W4KW draws 781 kWh — about $147 at the U.S. average rate, concentrated in the months you actually run it. It sits near the bottom of the certified table — using 47% more than the median room air conditioner (rank 338 of 396) — so the state you live in matters more than usual. The same unit costs $96 a year in North Dakota but $364 in Hawaii — electricity rates, not the appliance, make the difference.
Estimated annual running cost · U.S. average rate 18.8¢/kWh
$147/yr
- Per month
- $12.26
- Per day
- 40¢
- Certified use
- 781 kWh/yr
- Cooling capacity
- 15,000 BTU/hr
- CEER
- 14.4
- Mounting
- Straddles Window
- Variable-speed compressor
- Yes
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 17.4¢ | $136 | |
| Alaska | 27.4¢ | $214 | |
| Arizona | 15.5¢ | $121 | |
| Arkansas | 14.2¢ | $111 | |
| California | 35.3¢ | $275 | |
| Colorado | 16.5¢ | $129 | |
| Connecticut | 32.2¢ | $252 | |
| Delaware | 18.8¢ | $147 | |
| District of Columbia | 25.4¢ | $199 | |
| Florida | 15.4¢ | $120 | |
| Georgia | 15.4¢ | $120 | |
| Hawaiipriciest | 46.6¢ | $364 | |
| Idaho | 12.7¢ | $99 | |
| Illinois | 20.5¢ | $160 | |
| Indiana | 17.9¢ | $140 | |
| Iowa | 13.9¢ | $108 | |
| Kansas | 15.8¢ | $123 | |
| Kentucky | 15.0¢ | $117 | |
| Louisiana | 14.4¢ | $113 | |
| Maine | 28.4¢ | $222 | |
| Maryland | 22.1¢ | $172 | |
| Massachusetts | 29.4¢ | $230 | |
| Michigan | 21.4¢ | $167 | |
| Minnesota | 16.4¢ | $128 | |
| Mississippi | 16.8¢ | $131 | |
| Missouri | 14.0¢ | $109 | |
| Montana | 13.9¢ | $109 | |
| Nebraska | 13.3¢ | $104 | |
| Nevada | 14.3¢ | $112 | |
| New Hampshire | 27.2¢ | $213 | |
| New Jersey | 23.5¢ | $184 | |
| New Mexico | 15.2¢ | $118 | |
| New York | 29.4¢ | $230 | |
| North Carolina | 16.3¢ | $127 | |
| North Dakotacheapest | 12.3¢ | $96 | |
| Ohio | 19.5¢ | $152 | |
| Oklahoma | 13.3¢ | $104 | |
| Oregon | 15.8¢ | $123 | |
| Pennsylvania | 21.5¢ | $168 | |
| Rhode Island | 28.3¢ | $221 | |
| South Carolina | 17.1¢ | $133 | |
| South Dakota | 14.5¢ | $113 | |
| Tennessee | 14.9¢ | $117 | |
| Texas | 17.0¢ | $133 | |
| Utah | 13.3¢ | $104 | |
| Vermont | 24.6¢ | $192 | |
| Virginia | 17.4¢ | $136 | |
| Washington | 14.4¢ | $112 | |
| West Virginia | 16.1¢ | $125 | |
| Wisconsin | 19.2¢ | $150 | |
| Wyoming | 14.7¢ | $115 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| Friedrich CCV15A10A | 781 | $147 |
| TCL H15W4KW-CA | 781 | $147 |
| TCL T15WQ2S | 781 | $147 |
| Whirlpool WHAW-151IN | 781 | $147 |
| Friedrich WCVT12B10A | 767 | $144 |
| Midea MAT14R2FWTKmost efficient | 755 | $142 |
Run your own numbers
Your rate, your numbers
- Per day
- 40¢
- Per month
- $12.26
- Per year
- $147
781 kWh/yr × 18.8¢/kWh = $147/yr
Prefilled with this model's certified 781 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 TCL H15W4KW use?
- ENERGY STAR certifies the TCL H15W4KW at 781 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 TCL H15W4KW cost to run per month?
- About $12.26 a month at the U.S. average residential rate (18.8¢/kWh) — 40¢ a day, or $147 a year. Your state's rate moves this up or down; see the table above.
- Is the TCL H15W4KW energy efficient?
- It uses 47% more electricity than the median certified room air conditioner, which puts it among the least efficient certified models.
- What does the TCL H15W4KW cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $96 a year in North Dakota (12.3¢/kWh) and $364 in Hawaii (46.6¢/kWh).