WattCost

Data through June 2026

Running cost · Air Purifiers · ENERGY STAR certified

Midea KJ500G-L1

The Midea KJ500G-L1's certified consumption is 297 kWh per year, which prices out to about $54 at the national average rate — your hours of use scale that directly. Even among certified models it's on the thirsty end: 101% more electricity than the median air purifier, ranked 184 of 225. Where you live moves the bill from $39 a year in Nevada to $157 in Hawaii. Note the certified pool here is small (225 models), so rankings shift more with each data refresh.

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

$54/yr

$5.50 · cheapest certified air purifiers$90 · priciest
Per month
$4.54
Per day
15¢
Certified use
297 kWh/yr
Rated room size
474 sq ft
CADR (smoke)
306
Technology
Fan and Filter
Efficiency
6.1 CFM/W
30 kWh490 kWh
Where the Midea KJ500G-L1 (▮) sits among all 225 certified air purifiers, by annual kWh

What it costs in every state

Midea KJ500G-L1: 297 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama16.4¢$49
Alaska28.2¢$84
Arizona15.2¢$45
Arkansas14.1¢$42
California34.7¢$103
Colorado17.1¢$51
Connecticut24.3¢$72
Delaware19.3¢$57
District of Columbia24.4¢$72
Florida15.1¢$45
Georgia16.4¢$49
Hawaiipriciest52.7¢$157
Idaho14.4¢$43
Illinois19.9¢$59
Indiana17.5¢$52
Iowa15.9¢$47
Kansas15.7¢$47
Kentucky14.3¢$42
Louisiana13.5¢$40
Maine29.6¢$88
Maryland21.8¢$65
Massachusetts29.6¢$88
Michigan23.0¢$68
Minnesota17.5¢$52
Mississippi14.9¢$44
Missouri16.2¢$48
Montana15.1¢$45
Nebraska13.3¢$39
Nevadacheapest13.1¢$39
New Hampshire27.0¢$80
New Jersey24.9¢$74
New Mexico15.1¢$45
New York29.5¢$88
North Carolina14.7¢$44
North Dakota14.1¢$42
Ohio19.2¢$57
Oklahoma14.3¢$43
Oregon16.3¢$48
Pennsylvania21.7¢$65
Rhode Island29.2¢$87
South Carolina15.6¢$46
South Dakota15.4¢$46
Tennessee14.1¢$42
Texas15.9¢$47
Utah13.4¢$40
Vermont24.4¢$73
Virginia17.2¢$51
Washington14.9¢$44
West Virginia15.4¢$46
Wisconsin19.6¢$58
Wyoming15.2¢$45

Certified models closest in efficiency

air purifiers within reach of 297 kWh/yr
ModelkWh/yr$/yr (US avg)
Noma 143-0033-2297$54
okaysou AirMac X7297$54
Atmosphere Sky 120539298$55
IQAir ATEM E295$54
Midea KJ500G-L1299$55
Sharp AirMac X7299$55

Run your own numbers

Your rate, your numbers

Per day
15¢
Per month
$4.54
Per year
$54

297 kWh/yr × 18.3¢/kWh = $54/yr

Prefilled with this model's certified 297 kWh/yr — adjust if your usage differs from the DOE test basis. The certified annual kWh comes from the ENERGY STAR room air cleaner test basis, which assumes continuous daily operation. Running fewer hours costs proportionally less.

Questions, answered with the data

How much electricity does the Midea KJ500G-L1 use?
ENERGY STAR certifies the Midea KJ500G-L1 at 297 kWh per year. The certified annual kWh comes from the ENERGY STAR room air cleaner test basis, which assumes continuous daily operation. Running fewer hours costs proportionally less.
How much does the Midea KJ500G-L1 cost to run per month?
About $4.54 a month at the U.S. average residential rate (18.3¢/kWh) — 15¢ a day, or $54 a year. Your state's rate moves this up or down; see the table above.
Is the Midea KJ500G-L1 energy efficient?
It uses 101% more electricity than the median certified air purifier, which puts it among the least efficient certified models.
What does the Midea KJ500G-L1 cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $39 a year in Nevada (13.1¢/kWh) and $157 in Hawaii (52.7¢/kWh).

Keep digging