WattCost

Data through April 2026

Running cost · Dehumidifiers · ENERGY STAR certified

KNKA PD30MA-20

Under the DOE test basis, the KNKA PD30MA-20 draws 230 kWh — about $43 at the U.S. average rate, concentrated in the months you actually run it. Compared with the median certified dehumidifier, it uses 33% less electricity — rank 71 out of 481. The same unit costs $28 a year in North Dakota but $107 in Hawaii — electricity rates, not the appliance, make the difference.

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

$43/yr

$20 · cheapest certified dehumidifiers$529 · priciest
Per month
$3.61
Per day
12¢
Certified use
230 kWh/yr
Type
Portable Dehumidifier
Capacity
18.5 pints/day
Efficiency (IEF)
1.7 L/kWh
105 kWh2,808 kWh
Where the KNKA PD30MA-20 (▮) sits among all 481 certified dehumidifiers, by annual kWh

What it costs in every state

KNKA PD30MA-20: 230 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$40
Alaska27.4¢$63
Arizona15.5¢$36
Arkansas14.2¢$33
California35.3¢$81
Colorado16.5¢$38
Connecticut32.2¢$74
Delaware18.8¢$43
District of Columbia25.4¢$58
Florida15.4¢$35
Georgia15.4¢$35
Hawaiipriciest46.6¢$107
Idaho12.7¢$29
Illinois20.5¢$47
Indiana17.9¢$41
Iowa13.9¢$32
Kansas15.8¢$36
Kentucky15.0¢$35
Louisiana14.4¢$33
Maine28.4¢$65
Maryland22.1¢$51
Massachusetts29.4¢$68
Michigan21.4¢$49
Minnesota16.4¢$38
Mississippi16.8¢$39
Missouri14.0¢$32
Montana13.9¢$32
Nebraska13.3¢$31
Nevada14.3¢$33
New Hampshire27.2¢$63
New Jersey23.5¢$54
New Mexico15.2¢$35
New York29.4¢$68
North Carolina16.3¢$37
North Dakotacheapest12.3¢$28
Ohio19.5¢$45
Oklahoma13.3¢$31
Oregon15.8¢$36
Pennsylvania21.5¢$49
Rhode Island28.3¢$65
South Carolina17.1¢$39
South Dakota14.5¢$33
Tennessee14.9¢$34
Texas17.0¢$39
Utah13.3¢$31
Vermont24.6¢$56
Virginia17.4¢$40
Washington14.4¢$33
West Virginia16.1¢$37
Wisconsin19.2¢$44
Wyoming14.7¢$34

Certified models closest in efficiency

dehumidifiers within reach of 230 kWh/yr
ModelkWh/yr$/yr (US avg)
KNKA PRO PD30MA-20230$43
ALORAIR Sentinel Pro35Xmost efficient242$46
ARGENDON Sandidry Pro35Cmost efficient242$46
Midea MAD20S1QWT249$47
Midea MC20MSWBA3RCM249$47
Midea MDUDMA-20AEN8-BA7249$47

Run your own numbers

Your rate, your numbers

Per day
12¢
Per month
$3.61
Per year
$43

230 kWh/yr × 18.8¢/kWh = $43/yr

Prefilled with this model's certified 230 kWh/yr — adjust if your usage differs from the DOE test basis. The certified annual kWh comes from the DOE test basis for standardized annual runtime. Damp basements that run a unit year-round will exceed it; seasonal use will come in under.

Questions, answered with the data

How much electricity does the KNKA PD30MA-20 use?
ENERGY STAR certifies the KNKA PD30MA-20 at 230 kWh per year. The certified annual kWh comes from the DOE test basis for standardized annual runtime. Damp basements that run a unit year-round will exceed it; seasonal use will come in under.
How much does the KNKA PD30MA-20 cost to run per month?
About $3.61 a month at the U.S. average residential rate (18.8¢/kWh) — 12¢ a day, or $43 a year. Your state's rate moves this up or down; see the table above.
Is the KNKA PD30MA-20 energy efficient?
It uses 33% less electricity than the median certified dehumidifier, placing it in the efficient third of certified models.
What does the KNKA PD30MA-20 cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $28 a year in North Dakota (12.3¢/kWh) and $107 in Hawaii (46.6¢/kWh).

Keep digging