TCL H24W4KW-CA
ENERGY STAR certified
Window air conditioner · 24000 BTU/hr
Inthis room air conditioner costs
about $21 a month
$256 a year
An estimate at your state's average rate — not a guarantee of your bill.
The yellow sticker says $198 a year.
You'll pay $57 more.
Sticker uses 14¢ per kWh. The U.S. average is 18.0¢ per kWh.
Energy use
1,417 kWh a year
vs similar window air conditioner
+141%
Cheaper room air conditioners, same size
ENERGY STAR lists 4 other certified models at the same 1,417 kWh a year, size and type, so everything on this page applies to them too.
Cheaper to run, same size
- Hisense AW2223TW3WWindow air conditioner · 22000 BTU/hr$198
- LG LW2422IVSM(208V)Window air conditioner · 23500 BTU/hr$219
- LG LW2422IVSM(230V)Window air conditioner · 23500 BTU/hr$219
- K�hl KCVM24B30BWindow air conditioner · 23100 BTU/hr$225
A year at the U.S. average residential rate.
Cost in every state
1,417 kWh a year × each state's average residential rate (EIA 12-month average through July 2026).
| State | Rate | Per year | Per month |
|---|---|---|---|
| Hawaii | 43.7¢ | $619 | about $52 a month |
| California | 33.1¢ | $470 | about $39 a month |
| Massachusetts | 30.4¢ | $431 | about $36 a month |
| Rhode Island | 29.4¢ | $417 | about $35 a month |
| Maine | 29.3¢ | $415 | about $35 a month |
| New York | 28.4¢ | $402 | about $33 a month |
| Connecticut | 28.2¢ | $400 | about $33 a month |
| Alaska | 27.0¢ | $383 | about $32 a month |
| New Hampshire | 26.8¢ | $379 | about $32 a month |
| District of Columbia | 24.2¢ | $343 | about $29 a month |
Show all 52 statesShow fewer
| Vermont | 23.9¢ | $339 | about $28 a month |
|---|---|---|---|
| New Jersey | 23.6¢ | $335 | about $28 a month |
| Maryland | 22.3¢ | $316 | about $26 a month |
| Michigan | 21.0¢ | $298 | about $25 a month |
| Pennsylvania | 20.8¢ | $294 | about $25 a month |
| Illinois | 19.0¢ | $269 | about $22 a month |
| Wisconsin | 18.8¢ | $266 | about $22 a month |
| Ohio | 18.3¢ | $259 | about $22 a month |
| U.S. average | 18.0¢ | $256 | about $21 a month |
| Delaware | 18.0¢ | $255 | about $21 a month |
| Indiana | 17.1¢ | $242 | about $20 a month |
| Virginia | 16.6¢ | $235 | about $20 a month |
| Colorado | 16.6¢ | $235 | about $20 a month |
| Alabama | 16.5¢ | $234 | about $19 a month |
| Minnesota | 16.2¢ | $230 | about $19 a month |
| Texas | 16.0¢ | $227 | about $19 a month |
| South Carolina | 15.7¢ | $223 | about $19 a month |
| West Virginia | 15.7¢ | $222 | about $18 a month |
| Oregon | 15.6¢ | $221 | about $18 a month |
| Arizona | 15.5¢ | $219 | about $18 a month |
| Florida | 15.4¢ | $218 | about $18 a month |
| New Mexico | 15.2¢ | $216 | about $18 a month |
| Kansas | 15.1¢ | $214 | about $18 a month |
| Georgia | 15.1¢ | $214 | about $18 a month |
| Mississippi | 14.9¢ | $212 | about $18 a month |
| North Carolina | 14.9¢ | $211 | about $18 a month |
| South Dakota | 14.3¢ | $202 | about $17 a month |
| Washington | 14.2¢ | $201 | about $17 a month |
| Wyoming | 14.2¢ | $201 | about $17 a month |
| Iowa | 14.1¢ | $200 | about $17 a month |
| Kentucky | 14.0¢ | $198 | about $17 a month |
| Montana | 13.9¢ | $197 | about $16 a month |
| Missouri | 13.9¢ | $197 | about $16 a month |
| Tennessee | 13.7¢ | $194 | about $16 a month |
| Oklahoma | 13.6¢ | $193 | about $16 a month |
| Nevada | 13.6¢ | $192 | about $16 a month |
| Arkansas | 13.5¢ | $191 | about $16 a month |
| Utah | 13.3¢ | $189 | about $16 a month |
| Louisiana | 13.1¢ | $185 | about $15 a month |
| Nebraska | 12.9¢ | $183 | about $15 a month |
| Idaho | 12.7¢ | $180 | about $15 a month |
| North Dakota | 12.5¢ | $178 | about $15 a month |
What the TCL H24W4KW-CA costs where electricity is expensive
At Hawaii's average residential rate of 43.7¢ per kWh, the TCL H24W4KW-CA costs $619 a year — $421 more a year than the label says. The EnergyGuide label estimates $198 a year, because every label in the country is calculated at 14¢ per kWh. At the U.S. average of 18.0¢ per kWh this room air conditioner costs $256 a year, and in North Dakota, the cheapest state, $178 a year.
| Where | Rate | Cost a year | vs the label |
|---|---|---|---|
| Hawaii | 43.7¢ per kWh | $619 | +$421 |
| California | 33.1¢ per kWh | $470 | +$271 |
| Massachusetts | 30.4¢ per kWh | $431 | +$232 |
| Rhode Island | 29.4¢ per kWh | $417 | +$218 |
| Maine | 29.3¢ per kWh | $415 | +$217 |
| North Dakota | 12.5¢ per kWh | $178 | −$21 |
Electricity prices: EIA 12-month average through July 2026, residential sector, average revenue per kWh. Label figure calculated at 14¢ per kWh, the rate the FTC requires on labels.
Full specs
At the U.S. average residential rate this one costs $256 a year — about 141% more expensive to run than the average window air conditioner ($106 a year across 443 certified models).
Every model on this scale is ENERGY STAR certified. Range across 443 window air conditioners, priced a year at the U.S. average residential rate.
- Brand
- TCL
- Model number
- H24W4KW-CA
- Type
- Window air conditioner
- Capacity
- 24000 BTU/hr
- Annual energy use
- 1,417 kWh a year
- Combined Energy Factor (CEF)
- 12.7
- Better than the federal standard
- 35% less energy
- ENERGY STAR Most Efficient
- No
- On the market since
- December 2024
- Certified
- March 2024
- UPC
- 846042030960
- Cooling capacity (BTU/hr)
- 24000
- CEER
- 12.7
- Mounting
- Straddles Window
- Variable-speed compressor
- Yes
- Heating mode
- No
- Voltage
- 230
- Width (in)
- 26.0
- Height (in)
- 15.3
- Depth (in)
- 27.5
Where to buy
We do not sell appliances. These open a search on the retailer's own site.
Common questions
+How much does the TCL H24W4KW-CA cost to run per month?
about $21 a month at the U.S. average residential rate of 18.0¢ per kWh, or $256 a year. Your cost depends on your state's rate — see the table above.
+How many kWh does the TCL H24W4KW-CA use?
1,417 kWh a year, as the manufacturer filed it with the EPA, in the ENERGY STAR certified product database.
+Is the TCL H24W4KW-CA energy efficient?
It is listed as ENERGY STAR certified. It uses about 141% more electricity than the average window air conditioner (average: 589 kWh a year).
+How does the TCL H24W4KW-CA compare to the average room air conditioner?
The average window air conditioner in our database uses 589 kWh a year, costing $106 a year at the U.S. average residential rate. The TCL H24W4KW-CA uses 1,417 kWh a year, costing $256 a year.
How we calculate this
Annual energy use (1,417 kWh a year) is the figure the manufacturer filed for this model with the EPA, in the ENERGY STAR certified product database. Running cost is that figure multiplied by a state's average residential electricity price from the U.S. Energy Information Administration (12-month average through July 2026, average revenue per kWh).
The annual figure for a room air conditioner assumes 750 hours of cooling a year, per the DOE test procedure (10 CFR 430 Subpart B, Appendix F, §5.2.1). Full methodology.
Sources: EPA ENERGY STAR certified product data, updated weekly · U.S. EIA electricity prices, 12-month average through July 2026.