WattCost

Data through April 2026

Running cost · Room Air Conditioners · ENERGY STAR certified

TCL T12WV9SB

The TCL T12WV9SB is certified at 563 kWh per year (based on 750 standardized hours), roughly $106 at the national average — though seasonal use means your real bill lands in a few months, not twelve. That's close to the middle of the certified pack — about 6% above the median room air conditioner, ranked 209 of 396. The same unit costs $69 a year in North Dakota but $262 in Hawaii — electricity rates, not the appliance, make the difference. It also meets ENERGY STAR's stricter “Most Efficient” criteria.

Estimated annual running cost · U.S. average rate 18.8¢/kWh

$106/yr

$52 · cheapest certified room air conditioners$395 · priciest
Per month
$8.83
Per day
29¢
Certified use
563 kWh/yr
Cooling capacity
12,000 BTU/hr
CEER
16
Mounting
Straddles Window
Variable-speed compressor
Yes
274 kWh2,096 kWh
Where the TCL T12WV9SB (▮) sits among all 396 certified room air conditioners, by annual kWh

What it costs in every state

TCL T12WV9SB: 563 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$98
Alaska27.4¢$154
Arizona15.5¢$87
Arkansas14.2¢$80
California35.3¢$198
Colorado16.5¢$93
Connecticut32.2¢$181
Delaware18.8¢$106
District of Columbia25.4¢$143
Florida15.4¢$87
Georgia15.4¢$86
Hawaiipriciest46.6¢$262
Idaho12.7¢$71
Illinois20.5¢$115
Indiana17.9¢$101
Iowa13.9¢$78
Kansas15.8¢$89
Kentucky15.0¢$84
Louisiana14.4¢$81
Maine28.4¢$160
Maryland22.1¢$124
Massachusetts29.4¢$166
Michigan21.4¢$120
Minnesota16.4¢$92
Mississippi16.8¢$94
Missouri14.0¢$79
Montana13.9¢$78
Nebraska13.3¢$75
Nevada14.3¢$80
New Hampshire27.2¢$153
New Jersey23.5¢$132
New Mexico15.2¢$85
New York29.4¢$166
North Carolina16.3¢$91
North Dakotacheapest12.3¢$69
Ohio19.5¢$110
Oklahoma13.3¢$75
Oregon15.8¢$89
Pennsylvania21.5¢$121
Rhode Island28.3¢$159
South Carolina17.1¢$96
South Dakota14.5¢$82
Tennessee14.9¢$84
Texas17.0¢$96
Utah13.3¢$75
Vermont24.6¢$138
Virginia17.4¢$98
Washington14.4¢$81
West Virginia16.1¢$90
Wisconsin19.2¢$108
Wyoming14.7¢$83

Certified models closest in efficiency

room air conditioners within reach of 563 kWh/yr
ModelkWh/yr$/yr (US avg)
Midea MAW12V1WBKmost efficient563$106
Midea MAW12V1WBK-Tmost efficient563$106
Midea MAW12V1WWTmost efficient563$106
Midea MAW12V1WWT-Tmost efficient563$106
Midea MWEUWA-12CRFN8-BCP0most efficient563$106
TCL T12WV4Smost efficient563$106

Run your own numbers

Your rate, your numbers

Per day
29¢
Per month
$8.83
Per year
$106

563 kWh/yr × 18.8¢/kWh = $106/yr

Prefilled with this model's certified 563 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 T12WV9SB use?
ENERGY STAR certifies the TCL T12WV9SB at 563 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 T12WV9SB cost to run per month?
About $8.83 a month at the U.S. average residential rate (18.8¢/kWh) — 29¢ a day, or $106 a year. Your state's rate moves this up or down; see the table above.
Is the TCL T12WV9SB energy efficient?
It uses 6% more electricity than the median certified room air conditioner. It also meets ENERGY STAR's Most Efficient criteria.
What does the TCL T12WV9SB cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $69 a year in North Dakota (12.3¢/kWh) and $262 in Hawaii (46.6¢/kWh).

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