AlorAir Sentinel HD55S dehumidifier: specs and cost to run

Our read

Who it suits

On the ENERGY STAR table, the Sentinel HD55S suits 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

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 $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.

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 Abestorm Guardian SN55S and BaseAire AirWerx 55S 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 Sentinel HD55S has no Wi-Fi app on the EPA list. In a basement you rarely visit, plan to check it in person.

Crawl space dehumidifier guide

Ask before you buy

Ask about the pump, and about the cold

Our sources don’t say whether the Sentinel HD55S has a pump, or how cold it can run. With no drain lower than the unit, the pump lift must reach your sink. Under 65°F, ENERGY STAR says the coils can frost.

Plan the drain

From the data

Where it stands

Uses 379 kWh a year, 5 kWh over the median of its class.
Its refrigerant is R-32, flagged as lower GWP.Global warming potential 675.
Of the 87 certified 29–44 pint portables, 58 use less energy, and 4 use exactly as much.
At 2.08 liters per kWh, it clears the federal minimum for its class by 30%.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.
The largest portable certified under the AlorAir name. Next down is the Helios D35, at 24 pints.That one uses 105 kWh a year less.
On the market since March 2025, newer than 9% 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, Argendon, and BaseAire models with the EPA.
Another brand near this size: the Abestorm Guardian SN55S, at 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

A day of nonstop drying means 36.33 pints of water, about 4.5 gallons, for some 8.3 kWh. At the average home electricity price in the United States, the Sentinel HD55S costs $1.51 to run that day.

The EPA’s yearly estimate, 379 kWh, adds up to about 46 days like that. Each extra day at full output costs another $1.51.

Those 36.33 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 4.5 gallons to get rid of. Check how the Sentinel HD55S drains, since our sources don’t say.

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 4005597 · certified Mar 18, 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 18, 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: 764742415552 EPA

Compare

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Guides

Guides and a brand comparison

Each guide compares the certified models of this size for one need. Moiswell vs AlorAir sets the two brands side by side.

35-pint dehumidifiersCovers 30–40 pints Dehumidifier for moldCovers 35–40 pints Moiswell vs AlorAirBrand comparisonComparison Garage dehumidifierCovers 35–40 pints

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AlorAir Sentinel HD55S

Who it suits

Where that fits on the ENERGY STAR sizing table

Its power bill is close to the norm

Same EPA figures under two other brands

You’ll check it in person

Ask about the pump, and about the cold

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

FHDD3534Y1

MAD35S1QWT-A

JD025CE-120

Guides and a brand comparison

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