WattCost

Data through April 2026

Running cost · Room Air Conditioners · ENERGY STAR certified

Seasons ST12VB2

Under the DOE test basis of 750 hours a year, the Seasons ST12VB2 draws 648 kWh — about $122 at the U.S. average rate, concentrated in the months you actually run it. Efficiency-wise it's unremarkable in a good way: within 22% of the median certified room air conditioner (rank 297 of 396). The same unit costs $80 a year in North Dakota but $302 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

$122/yr

$52 · cheapest certified room air conditioners$395 · priciest
Per month
$10.16
Per day
33¢
Certified use
648 kWh/yr
Cooling capacity
12,000 BTU/hr
CEER
13.9
Mounting
Does Not Straddle Window or Windowsill
Variable-speed compressor
Yes
274 kWh2,096 kWh
Where the Seasons ST12VB2 (▮) sits among all 396 certified room air conditioners, by annual kWh

What it costs in every state

Seasons ST12VB2: 648 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$113
Alaska27.4¢$177
Arizona15.5¢$100
Arkansas14.2¢$92
California35.3¢$228
Colorado16.5¢$107
Connecticut32.2¢$209
Delaware18.8¢$122
District of Columbia25.4¢$165
Florida15.4¢$100
Georgia15.4¢$100
Hawaiipriciest46.6¢$302
Idaho12.7¢$82
Illinois20.5¢$133
Indiana17.9¢$116
Iowa13.9¢$90
Kansas15.8¢$102
Kentucky15.0¢$97
Louisiana14.4¢$93
Maine28.4¢$184
Maryland22.1¢$143
Massachusetts29.4¢$191
Michigan21.4¢$139
Minnesota16.4¢$106
Mississippi16.8¢$109
Missouri14.0¢$91
Montana13.9¢$90
Nebraska13.3¢$86
Nevada14.3¢$93
New Hampshire27.2¢$176
New Jersey23.5¢$152
New Mexico15.2¢$98
New York29.4¢$191
North Carolina16.3¢$105
North Dakotacheapest12.3¢$80
Ohio19.5¢$126
Oklahoma13.3¢$86
Oregon15.8¢$102
Pennsylvania21.5¢$139
Rhode Island28.3¢$183
South Carolina17.1¢$110
South Dakota14.5¢$94
Tennessee14.9¢$97
Texas17.0¢$110
Utah13.3¢$86
Vermont24.6¢$159
Virginia17.4¢$113
Washington14.4¢$93
West Virginia16.1¢$104
Wisconsin19.2¢$124
Wyoming14.7¢$95

Certified models closest in efficiency

room air conditioners within reach of 648 kWh/yr
ModelkWh/yr$/yr (US avg)
Midea MAT12R1FWTKmost efficient648$122
Midea MAT12R1SWTKmost efficient648$122
Midea MAT12R2FWTKmost efficient648$122
Midea MAT12R2SWTKmost efficient648$122
Midea MWEUTW-12CRFN8-BCM9most efficient648$122
Midea MWEUTW-12CRFN8-MCM9most efficient648$122

Run your own numbers

Your rate, your numbers

Per day
33¢
Per month
$10.17
Per year
$122

648 kWh/yr × 18.8¢/kWh = $122/yr

Prefilled with this model's certified 648 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 Seasons ST12VB2 use?
ENERGY STAR certifies the Seasons ST12VB2 at 648 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 Seasons ST12VB2 cost to run per month?
About $10.16 a month at the U.S. average residential rate (18.8¢/kWh) — 33¢ a day, or $122 a year. Your state's rate moves this up or down; see the table above.
Is the Seasons ST12VB2 energy efficient?
It uses 22% more electricity than the median certified room air conditioner. It also meets ENERGY STAR's Most Efficient criteria.
What does the Seasons ST12VB2 cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $80 a year in North Dakota (12.3¢/kWh) and $302 in Hawaii (46.6¢/kWh).

Keep digging