Abestorm Guardian SN55S dehumidifier: specs and cost to run

Our read

Who it suits

At 36 pints a day, the Guardian SN55S fits 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.

By Julien Fourel · How we compare

Updated Oct 16, 2026

36 pints a day

Where that fits on the ENERGY STAR sizing table

How damp the space is	Under 2,000 sq ft	Over 2,000 sq ft
DampSmells musty now and then50–75% RH	Room to spare20–30 pints suggested	Fits30+ pints suggested
Very dampDamp spots on walls or floor75–90% RH	Fits25–40 pints suggested	Too small40+ pints suggested
WetWalls sweat or water seeps in90–100% RH	Fits30–50 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

A middle-of-the-pack power bill

Next to the median 29–44 pint model, this one costs $10 more to run in the United States over 11 years. That’s how long the DOE expects a portable to last. The thriftiest 29–44 pint model, the Deciuu LIBRA-RCS32(Y)-N4-3(B), would save $93 over those years.

How long dehumidifiers last

Same figures, other brand

Same EPA figures under two other brands

The company that files it with the EPA lists the AlorAir Sentinel HD55S and BaseAire AirWerx 55S with the same capacity, energy use, and efficiency. Compare their prices and warranties before you choose.

Wi-Fi app

No app to watch it from upstairs

The EPA doesn’t list the Guardian SN55S as connected. Of the 87 certified 29–44 pint models, 8 are. In a crawl space you rarely open, a connected one saves the trip.

Crawl space dehumidifier guide

Ask before you buy

Ask for the pump lift and the lowest working temperature

Pump and cold are the two blanks for the Guardian SN55S in our sources. A pump matters when water can’t run down to a floor drain. Cold matters because below 65°F, ENERGY STAR says frost can form on the coils.

Plan the drain

From the data

Where it stands

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.
Tied for 59th of 87 certified 29–44 pint portables for low energy use.
Its efficiency, 2.08 liters per kWh, is 30% above the federal minimum for its capacity class.The DOE sets 1.60 L/kWh for portables rated over 25 and up to 50 pints a day. Every unit made since June 13, 2019, must meet it.
Abestorm’s only model on the EPA list.
Sold since March 2025. Among 29–44 pint models, 8 of 87 came out earlier.
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 AlorAir, Argendon, and BaseAire models with the EPA.
The nearest size from another brand is the AlorAir Sentinel HD55S, 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 Guardian SN55S 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 Guardian SN55S 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 Guardian SN55S has.

Plan the drain

Running cost

Cost in your state

Your state

379 kWh a year × the home electricity price of each state.

Prices: EIA, Electric Power Monthly, Table 5.6.A, July 2026. Lowest and highest of the 50 states and DC shown.
State	Price	Per year
Louisiana (lowest)	12.72¢	$48
U.S. average	18.31¢	$69
U.S. average	18.31¢	$69
California	33.61¢	$127
Hawaii (highest)	48.00¢	$182

All 50 states and DC

Safety

Recalls

No CPSC recall names this model.Checked Oct 4, 2026.

No CPSC dehumidifier recall names AlorAir Solutions.

Every number has a source

Where the numbers come from

U.S. EPAOct 15, 2026

Capacity, energy use, refrigerant, filing company, certification.

Record 4005599 · certified Mar 20, 2025

U.S. Energy Information AdministrationJuly 2026

Home electricity price in each state.

Electric Power Monthly, Table 5.6.A

Code of Federal RegulationsOct 7, 2026

Federal minimum efficiency for each size of dehumidifier.

10 CFR 430.32(v), as of Jan 1, 2025

Consumer Product Safety CommissionOct 4, 2026

Recalls of dehumidifiers.

No recall naming this company

Not published by these sources

Pump and pump lift
Noise, dB(A)
Bucket size
Lowest working temperature
Dimensions
Warranty

Found a number that looks wrong?Report it

Full spec sheet

All the details

How much water it removes2 of 3 published

Water removed a dayDOE 2019 test (Appendix X1): 36.33 pints EPA
Type: Portable EPA
Room size covered: Not published

Drainage0 of 4 published

Bucket size: Not published
Drain hose connection: Not published
Built-in pump: Not published
Pump lift: Not published

Running cost3 of 3 published

Energy useEPA yearly estimate: 379 kWh/yr EPA
Integrated energy factor (IEF)Liters removed per kWh. Higher is better: 2.08 L/kWh EPA
Cost a year in the United States: $69 EPA × EIA

Noise0 of 1 published

Noise level, dB(A): Not published

Build and warranty2 of 6 published

Refrigerant: R-32, 7.8 oz EPA
Wi-Fi app: No EPA
Lowest working temperature: Not published
Dimensions: Not published
Weight: Not published
Warranty: Not published

Certification and filing5 of 5 published

ENERGY STAR® certified: Mar 20, 2025 EPA
On the market since: Mar 3, 2025 EPA
Filed byCompany that filed the model with the EPA: AlorAir Solutions EPA
Sold in: United States, Canada EPA
UPC: 735626812439 EPA

Compare

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$69

Pump

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Noise

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Capacity

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Cost a year in the United States

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Cost a year in the United States

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Noise

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Guides

Guides that cover this model

Each guide compares the certified models of this size for one need.

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Tools

Abestorm Guardian SN55S

Who it suits

Where that fits on the ENERGY STAR sizing table

A middle-of-the-pack power bill

Same EPA figures under two other brands

No app to watch it from upstairs

Ask for the pump lift and the lowest working temperature

Where it stands

One full day of drying

Cost in your state

Recalls

Where the numbers come from

All the details

Similar 36-pint models

Sentinel HD55S

FHDD3534Y1

MAD35S1QWT-A

Guides that cover this model

Search