WattCost

Data through June 2026

Running cost · Room Air Conditioners · ENERGY STAR certified

Gradient CCHP11

Under the DOE test basis of 750 hours a year, the Gradient CCHP11 draws 415 kWh — about $76 at the U.S. average rate, concentrated in the months you actually run it. Compared with the median certified room air conditioner, it uses 22% less electricity — rank 125 out of 439. Where you live moves the bill from $54 a year in Nevada to $219 in Hawaii. It also meets ENERGY STAR's stricter “Most Efficient” criteria.

Uses 71% less energy than the U.S. federal minimum

Dimensions 24" H × 25.3" W × 37.3" D, 140 lb

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

$76/yr

$48 · cheapest certified room air conditioners$384 · priciest
Per month
$6.35
Per day
21¢
Certified use
415 kWh/yr
Cooling capacity
9,300 BTU/hr
CEER
16.8
Mounting
Straddles Window
Variable-speed compressor
Yes
260 kWh2,096 kWh
Where the Gradient CCHP11 (▮) sits among all 439 certified room air conditioners, by annual kWh

What it costs in every state

Gradient CCHP11: 415 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama16.4¢$68
Alaska28.2¢$117
Arizona15.2¢$63
Arkansas14.1¢$59
California34.7¢$144
Colorado17.1¢$71
Connecticut24.3¢$101
Delaware19.3¢$80
District of Columbia24.4¢$101
Florida15.1¢$63
Georgia16.4¢$68
Hawaiipriciest52.7¢$219
Idaho14.4¢$60
Illinois19.9¢$83
Indiana17.5¢$73
Iowa15.9¢$66
Kansas15.7¢$65
Kentucky14.3¢$59
Louisiana13.5¢$56
Maine29.6¢$123
Maryland21.8¢$91
Massachusetts29.6¢$123
Michigan23.0¢$95
Minnesota17.5¢$73
Mississippi14.9¢$62
Missouri16.2¢$67
Montana15.1¢$63
Nebraska13.3¢$55
Nevadacheapest13.1¢$54
New Hampshire27.0¢$112
New Jersey24.9¢$104
New Mexico15.1¢$63
New York29.5¢$122
North Carolina14.7¢$61
North Dakota14.1¢$59
Ohio19.2¢$80
Oklahoma14.3¢$59
Oregon16.3¢$68
Pennsylvania21.7¢$90
Rhode Island29.2¢$121
South Carolina15.6¢$65
South Dakota15.4¢$64
Tennessee14.1¢$58
Texas15.9¢$66
Utah13.4¢$56
Vermont24.4¢$101
Virginia17.2¢$71
Washington14.9¢$62
West Virginia15.4¢$64
Wisconsin19.6¢$81
Wyoming15.2¢$63

Certified models closest in efficiency

room air conditioners within reach of 415 kWh/yr
ModelkWh/yr$/yr (US avg)
Keystone KSTAW08INV-HCmost efficient414$76
Midea MAW08HV1CWTmost efficient414$76
Midea MWAUQB-08HRFN8-BCL0most efficient414$76
Friedrich KCVS08B10Amost efficient408$75
LG LW8024IVSM425$78
Brothers 102378most efficient426$78

Run your own numbers

Your rate, your numbers

Per day
21¢
Per month
$6.34
Per year
$76

415 kWh/yr × 18.3¢/kWh = $76/yr

Prefilled with this model's certified 415 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 Gradient CCHP11 use?
ENERGY STAR certifies the Gradient CCHP11 at 415 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 Gradient CCHP11 cost to run per month?
About $6.35 a month at the U.S. average residential rate (18.3¢/kWh) — 21¢ a day, or $76 a year. Your state's rate moves this up or down; see the table above.
Is the Gradient CCHP11 energy efficient?
It uses 22% less electricity than the median certified room air conditioner, placing it in the efficient third of certified models. It also meets ENERGY STAR's Most Efficient criteria.
What does the Gradient CCHP11 cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $54 a year in Nevada (13.1¢/kWh) and $219 in Hawaii (52.7¢/kWh).

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