Check before you buy. Pump, noise, and warranty aren’t in our sources, so ask the seller.
Our read
Who it suits
Rated 36 pints a day, the AirWerx 55S is sized for a wet space under 2,000 sq ft, or a damp one over. Two other brands list models with the same EPA figures, so compare prices.
Capacity suggested for each case, read Oct 5, 2026. ENERGY STAR adds that it’s better to oversize than undersize.
Running cost
Running cost won’t decide it
The DOE puts a portable’s average life at 11 years. Over that time, this model costs $10 more to run in the United States than the median 29–44 pint model. The thriftiest 29–44 pint model, the Deciuu LIBRA-RCS32(Y)-N4-3(B), would save $93 over those years.
The company that files it with the EPA lists the AlorAir Sentinel HD55S and Abestorm Guardian SN55S with the same capacity, energy use, and efficiency. Compare their prices and warranties before you choose.
Wi-Fi app
You’ll check it in person
Like 78 other 29–44 pint models out of 87, the AirWerx 55S has no Wi-Fi app on the EPA list. In a basement you rarely visit, plan to check it in person.
Neither figure is in our sources for the AirWerx 55S. Without a floor drain below it, a pump has to lift the water to a sink. Basements run cool, and below 65°F, ENERGY STAR says frost can form on the coils.
At 379 kWh a year, it sits 5 kWh above the middle of its class.
Its refrigerant is R-32, flagged as lower GWP.Global warming potential 675.
Among the 87 certified 29–44 pint portables, 58 use less energy.
The federal floor for its class is 1.60 liters per kWh. It reaches 2.08, or 30% more.That floor covers portables rated over 25 and up to 50 pints a day, for units made since June 13, 2019.
BaseAire’s only model on the EPA list.
On the market since April 2025, newer than 15% of the 29–44 pint models on the list.
Not on the EPA’s Most Efficient list, which names 1 of the 29–44 pint models.
The company that files it also files the Abestorm, AlorAir, and Argendon models with the EPA.
The AlorAir Sentinel HD55S is the closest size from another brand, rated 36 pints and 379 kWh a year.Both cost the same to run in the United States.
Our arithmetic
One full day of drying
Water
4.5gal
36.33 pints
Electricity
8.3kWh
liters ÷ IEF
Cost
$1.51
in the United States
In 24 hours at full output, the AirWerx 55S pulls about 4.5 gallons of water from the air and uses about 8.3 kWh. That day costs $1.51 in the United States.
About 46 such days make up the EPA’s yearly estimate of 379 kWh. If yours runs at full output more often, every extra day adds $1.51.
Its rating comes from a DOE test at 65°F and 60% humidity. In cooler air at that humidity, the AirWerx 55S pulls out less than 36.33 pints a day.
Those 4.5 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 AirWerx 55S has.