Check before you buy. Pump, noise, and warranty aren’t in our sources, so ask the seller.
Our read
Who it suits
On the ENERGY STAR table, the RHEA-RCS25(Y)-N4-3-25 suits a very damp space under 2,000 sq ft. It’s too small for a wet one. Its running cost is close to the median, so drainage, noise, and price matter more.
Capacity suggested for each case, read Oct 5, 2026. ENERGY STAR adds that it’s better to oversize than undersize.
Running cost
Its power bill is close to the norm
A portable lasts 11 years on average, by the DOE’s count. In that time, this model costs $2 more to run in the United States than the median 19–28 pint model. The thriftiest 19–28 pint model, the Knka PD30MA-20, would save $111 over those years.
Our sources publish no noise level for the RHEA-RCS25(Y)-N4-3-25. If it runs where you sleep or work, ask for a figure in dB(A), with the distance it was measured from.
Its 285 kWh a year is 1 kWh more than the median for its size.
Its refrigerant is R-32, flagged as lower GWP.Global warming potential 675.
No Wi-Fi app.Not listed as connected.
Tied for 79th of 155 certified 19–28 pint portables for low energy use.
Its efficiency, 1.86 liters per kWh, is 43% above the federal minimum for its capacity class.The DOE sets 1.30 L/kWh for portables rated 25 pints a day or less. Every unit made since June 13, 2019, must meet it.
Aeocky also makes it smaller, the LEO-RCS25(Y)-N4-3 at 23 pints, and bigger, the LEO-RCS32(Y)-N4-3(B) at 32 pints.The bigger one uses 51 kWh a year more.
Sold since October 2025. Among 19–28 pint models, 52 of 155 came out earlier.
On the EPA’s Most Efficient list, like 30 other 19–28 pint models.
The company that files it also files models under 7 other brands with the EPA, among them Deciuu, Easykey, and Greenlite.
The nearest size from another brand is the AeroNova ADC018, rated 25 pints and 257 kWh a year.In the United States, this one costs $5 a year more to run.
Our arithmetic
One full day of drying
Water
3.1gal
24.5 pints
Electricity
6.2kWh
liters ÷ IEF
Cost
$1.14
in the United States
A day of nonstop drying means 24.5 pints of water, about 3.1 gallons, for some 6.2 kWh. At the average home electricity price in the United States, the RHEA-RCS25(Y)-N4-3-25 costs $1.14 to run that day.
The EPA’s yearly estimate, 285 kWh, adds up to about 46 days like that. Each extra day at full output costs another $1.14.
Those 24.5 pints come from a DOE test at 65°F and 60% humidity. Cooler air at that humidity gives up less water, so expect fewer pints in a cold basement.
Every day at full output leaves 3.1 gallons to get rid of. Check how the RHEA-RCS25(Y)-N4-3-25 drains, since our sources don’t say.