WattCost

Data through April 2026

Running cost · Air Purifiers · ENERGY STAR certified

PELONIS KJ250G-Z42

At the standardized usage ENERGY STAR assumes, the PELONIS KJ250G-Z42 consumes 131 kWh a year — about $25 at the U.S. average electricity rate ($2.06 a month). Efficiency-wise it's unremarkable in a good way: within 11% of the median certified air purifier (rank 93 of 214). The same unit costs $16 a year in North Dakota but $61 in Hawaii — electricity rates, not the appliance, make the difference. It also meets ENERGY STAR's stricter “Most Efficient” criteria. Note the certified pool here is small (214 models), so rankings shift more with each data refresh.

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

$25/yr

$5.65 · cheapest certified air purifiers$92 · priciest
Per month
$2.06
Per day
7¢
Certified use
131 kWh/yr
Rated room size
226 sq ft
CADR (smoke)
146
Technology
Fan and Filter
Efficiency
6.6 CFM/W
30 kWh490 kWh
Where the PELONIS KJ250G-Z42 (▮) sits among all 214 certified air purifiers, by annual kWh

What it costs in every state

PELONIS KJ250G-Z42: 131 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$23
Alaska27.4¢$36
Arizona15.5¢$20
Arkansas14.2¢$19
California35.3¢$46
Colorado16.5¢$22
Connecticut32.2¢$42
Delaware18.8¢$25
District of Columbia25.4¢$33
Florida15.4¢$20
Georgia15.4¢$20
Hawaiipriciest46.6¢$61
Idaho12.7¢$17
Illinois20.5¢$27
Indiana17.9¢$23
Iowa13.9¢$18
Kansas15.8¢$21
Kentucky15.0¢$20
Louisiana14.4¢$19
Maine28.4¢$37
Maryland22.1¢$29
Massachusetts29.4¢$39
Michigan21.4¢$28
Minnesota16.4¢$21
Mississippi16.8¢$22
Missouri14.0¢$18
Montana13.9¢$18
Nebraska13.3¢$17
Nevada14.3¢$19
New Hampshire27.2¢$36
New Jersey23.5¢$31
New Mexico15.2¢$20
New York29.4¢$39
North Carolina16.3¢$21
North Dakotacheapest12.3¢$16
Ohio19.5¢$26
Oklahoma13.3¢$17
Oregon15.8¢$21
Pennsylvania21.5¢$28
Rhode Island28.3¢$37
South Carolina17.1¢$22
South Dakota14.5¢$19
Tennessee14.9¢$20
Texas17.0¢$22
Utah13.3¢$17
Vermont24.6¢$32
Virginia17.4¢$23
Washington14.4¢$19
West Virginia16.1¢$21
Wisconsin19.2¢$25
Wyoming14.7¢$19

Certified models closest in efficiency

air purifiers within reach of 131 kWh/yr
ModelkWh/yr$/yr (US avg)
Midea KJ250G-Z42most efficient131$25
PRO AIRE 1PAPUV15most efficient131$25
CLOROX 11030132$25
LEVOIT LAP-C311S-WUSR132$25
Windmill SAP2V1132$25
WOZOYO 200004-2132$25

Run your own numbers

Your rate, your numbers

Per day
7¢
Per month
$2.06
Per year
$25

131 kWh/yr × 18.8¢/kWh = $25/yr

Prefilled with this model's certified 131 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 PELONIS KJ250G-Z42 use?
ENERGY STAR certifies the PELONIS KJ250G-Z42 at 131 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 PELONIS KJ250G-Z42 cost to run per month?
About $2.06 a month at the U.S. average residential rate (18.8¢/kWh) — 7¢ a day, or $25 a year. Your state's rate moves this up or down; see the table above.
Is the PELONIS KJ250G-Z42 energy efficient?
It uses 11% less electricity than the median certified air purifier. It also meets ENERGY STAR's Most Efficient criteria.
What does the PELONIS KJ250G-Z42 cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $16 a year in North Dakota (12.3¢/kWh) and $61 in Hawaii (46.6¢/kWh).

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