ModelPortable
Portable dehumidifier, 9 pints a day
Water removed a day
9pints
9.2 pints/day, DOE 2019 test · EPA
Cost a year in the United States
$21
Pumps water out?
Not published
Ask for the pump lift
How loud?
Not published
Ask for a dB(A) figure
Energy use
117kWh/yr
Refrigerant
Not published
Check before you buy. Pump, noise, and warranty aren’t in our sources, so ask the seller.
Our read
At 9 pints a day, the CTH30B sits below the smallest size in the ENERGY STAR table. That size is 20 pints, for a damp room under 2,000 sq ft. Waykar lists two models with the same EPA figures, so compare prices.
9 pints a day
| How damp the space is | Under 2,000 sq ft | Over 2,000 sq ft |
|---|---|---|
| DampSmells musty now and then50–75% RH | Too small20–30 pints suggested | Too small30+ pints suggested |
| Very dampDamp spots on walls or floor75–90% RH | Too small25–40 pints suggested | Too small40+ pints suggested |
| WetWalls sweat or water seeps in90–100% RH | Too small30–50 pints suggested | Too small50+ pints suggested |
Capacity suggested for each case, read Oct 5, 2026. ENERGY STAR adds that it’s better to oversize than undersize.
Running cost
It uses 117 kWh a year, the median for 13-pint and smaller models. The nine thriftiest of its size would each save $24 in the United States over 11 years, the DOE’s average life for a portable. One is the Concetta AS-CSJ72XK-2WT-OL.
How long dehumidifiers lastSame figures, other brand
The company that files it with the EPA lists the Waykar CTH30A and CTH30D with the same capacity, energy use, and efficiency. Compare their prices and warranties before you choose.
Ask before you buy
Our sources publish no noise level for the CTH30B. If it runs where you sleep or work, ask for a figure in dB(A), with the distance it was measured from.
Quiet dehumidifier guideFrom the data
Our arithmetic
Water
1.2gal
9.2 pints
Electricity
2.6kWh
liters ÷ IEF
Cost
$0.47
in the United States
In 24 hours at full output, the CTH30B pulls about 1.1 gallons of water from the air and uses about 2.6 kWh. That day costs $0.47 in the United States.
About 46 such days make up the EPA’s yearly estimate of 117 kWh. If yours runs at full output more often, every extra day adds $0.47.
Its rating comes from a DOE test at 65°F and 60% humidity. In cooler air at that humidity, the CTH30B pulls out less than 9.2 pints a day.
Those 1.1 gallons need a way out: a hose to a drain, a pump, or a bucket you empty. Our sources don’t say which ones the CTH30B has.
Running cost
117 kWh a year × the home electricity price of each state.
| State | Price | Relative cost | Per year |
|---|---|---|---|
| Louisiana (lowest) | 12.72¢ | $15 | |
| U.S. averageYour state | 18.31¢ | $21 | |
| U.S. average | 18.31¢ | $21 | |
| California | 33.61¢ | $39 | |
| Hawaii (highest) | 48.00¢ | $56 |
Same EPA figures
The EPA lists the same capacity, 9.2 pints, and the same energy use, 117 kWh, for this model. Color, pump, or app may differ, so check each page.
Safety
No CPSC recall names this model.Checked Oct 4, 2026.
No CPSC dehumidifier recall names Waykar.
Every number has a source
U.S. EPAOct 15, 2026
Capacity, energy use, refrigerant, filing company, certification.
Record 4429398 · certified Jun 4, 2025U.S. Energy Information AdministrationJuly 2026
Home electricity price in each state.
Electric Power Monthly, Table 5.6.ACode of Federal RegulationsOct 7, 2026
Federal minimum efficiency for each size of dehumidifier.
10 CFR 430.32(v), as of Jan 1, 2025Consumer Product Safety CommissionOct 4, 2026
Recalls of dehumidifiers.
No recall naming this companyNot published by these sources
Found a number that looks wrong?Report it
Full spec sheet
Compare
Certified portables of the same size with a full page, closest in yearly energy use.