WattCost

Data through June 2026

Running cost · Room Air Conditioners · ENERGY STAR certified

Seasons SW18V2

Under the DOE test basis of 750 hours a year, the Seasons SW18V2 draws 844 kWh — about $155 at the U.S. average rate, concentrated in the months you actually run it. Even among certified models it's on the thirsty end: 59% more electricity than the median room air conditioner, ranked 386 of 439. The same unit costs $111 a year in Nevada but $445 in Hawaii — electricity rates, not the appliance, make the difference. It also meets ENERGY STAR's stricter “Most Efficient” criteria.

Uses 50% less energy than the U.S. federal minimum

Dimensions 17.9" H × 25.4" W × 23.6" D, 94.4 lb

Estimated annual running cost · U.S. average rate 18.3¢/kWh

$155/yr

$48 · cheapest certified room air conditioners$384 · priciest
Per month
$12.90
Per day
42¢
Certified use
844 kWh/yr
Cooling capacity
18,000 BTU/hr
CEER
16
Mounting
Does Not Straddle Window or Windowsill
Variable-speed compressor
Yes
260 kWh2,096 kWh
Where the Seasons SW18V2 (▮) sits among all 439 certified room air conditioners, by annual kWh

What it costs in every state

Seasons SW18V2: 844 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama16.4¢$138
Alaska28.2¢$238
Arizona15.2¢$128
Arkansas14.1¢$119
California34.7¢$293
Colorado17.1¢$145
Connecticut24.3¢$205
Delaware19.3¢$163
District of Columbia24.4¢$206
Florida15.1¢$127
Georgia16.4¢$138
Hawaiipriciest52.7¢$445
Idaho14.4¢$121
Illinois19.9¢$168
Indiana17.5¢$148
Iowa15.9¢$134
Kansas15.7¢$133
Kentucky14.3¢$120
Louisiana13.5¢$114
Maine29.6¢$250
Maryland21.8¢$184
Massachusetts29.6¢$250
Michigan23.0¢$194
Minnesota17.5¢$148
Mississippi14.9¢$126
Missouri16.2¢$137
Montana15.1¢$128
Nebraska13.3¢$112
Nevadacheapest13.1¢$111
New Hampshire27.0¢$228
New Jersey24.9¢$211
New Mexico15.1¢$127
New York29.5¢$249
North Carolina14.7¢$124
North Dakota14.1¢$119
Ohio19.2¢$162
Oklahoma14.3¢$121
Oregon16.3¢$138
Pennsylvania21.7¢$183
Rhode Island29.2¢$247
South Carolina15.6¢$131
South Dakota15.4¢$130
Tennessee14.1¢$119
Texas15.9¢$135
Utah13.4¢$113
Vermont24.4¢$206
Virginia17.2¢$145
Washington14.9¢$126
West Virginia15.4¢$130
Wisconsin19.6¢$165
Wyoming15.2¢$129

Certified models closest in efficiency

room air conditioners within reach of 844 kWh/yr
ModelkWh/yr$/yr (US avg)
Brothers 102387most efficient844$155
Friedrich KCVS16B30A844$155
Midea MAW18RV1KWTmost efficient844$155
Midea MAW18S2KWT-Amost efficient844$155
Midea MWCUWH-18CRFN8-MCP0most efficient844$155
Wallmaster WHVT14B33Bmost efficient838$154

Run your own numbers

Your rate, your numbers

Per day
42¢
Per month
$12.90
Per year
$155

844 kWh/yr × 18.3¢/kWh = $155/yr

Prefilled with this model's certified 844 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 SW18V2 use?
ENERGY STAR certifies the Seasons SW18V2 at 844 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 SW18V2 cost to run per month?
About $12.90 a month at the U.S. average residential rate (18.3¢/kWh) — 42¢ a day, or $155 a year. Your state's rate moves this up or down; see the table above.
Is the Seasons SW18V2 energy efficient?
It uses 59% more electricity than the median certified room air conditioner, which puts it among the least efficient certified models. It also meets ENERGY STAR's Most Efficient criteria.
What does the Seasons SW18V2 cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $111 a year in Nevada (13.1¢/kWh) and $445 in Hawaii (52.7¢/kWh).

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