The AlorAir Sentinel HD90 is a gravity-drain crawl space and basement dehumidifier. It removes 90 pints of water a day at AHAM conditions (80°F, 60% RH) and up to 198 pints a day at saturation (90°F, 90% RH), for spaces up to 2,600ft², while drawing 5.56 A.
With no pump to maintain, it suits installs where a floor drain, sump or outside run sits below the unit. The Sentinel HD90 holds your humidity setpoint on its own humidistat, restarts after power cuts, and can duct dry air into a finished room through its 6" supply collar.
Features
90 Pints a Day at AHAM
Removes 90 pints a day at 80°F and 60% RH, and up to 198 pints at saturation, from 210 CFM of airflow and a rotary compressor.
Gravity Drainage, No Pump
Condensate runs out through the drain hose by gravity, so there is no pump to clean or replace. The A5/A6 terminals can take the water level signal from an external condensate pump.
Automatic Humidity Control
The integral humidistat holds any setpoint from 36% to 90%. Below 36%, the unit switches to continuous mode for drying out a wet space.
Auto Defrost Down to 33.8°F
Automatic defrost clears ice from the rare earth alloy tube evaporator, so the unit keeps working in a cool crawl space.
Memory Restart
After a power cut, the unit comes back on its last setting without anyone going under the house.
Ducting and Remote Options
A 6" supply adapter comes standard, with an optional 12" return collar. AlorAir's optional wired remote runs on a 25' CAT 5 cable and has its own humidity sensor.
Low 5.56 A Draw
Rated at 2.69 L/kWh, it runs on a standard 115 V, 15 A GFCI circuit.
Specifications
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Model: Sentinel HD90
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Water Removal at AHAM (80°F, 60% RH): 90 pints/day
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Water Removal at Saturation (90°F, 90% RH): 198 pints/day
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Water Removal at DOE (60°F, 60% RH): 47.71 pints/day
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Coverage: Up to 2,600ft²
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Airflow: 210 CFM
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Operating Temperature: 33.8°F to 104°F
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Humidity Setpoint Range: 36% to 90%, plus continuous mode
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Drainage: Gravity drain; A5/A6 terminals for an optional external condensate pump
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Duct Connections: 6" supply adapter (standard); 12" return collar (optional)
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Power: 115 V, 60 Hz, 5.56 A
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Electrical Requirement: Grounded 3-prong GFCI outlet, 15 A circuit
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Efficiency: 2.69 L/kWh
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Compressor: Rotary
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Refrigerant: R32
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Filter: Washable pre-filter (MERV-8 optional)
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Noise: Less than 58 dBA
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Dimensions: 23.2"L x 15.2"W x 17.7"H
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Weight: 67.2 lbs (30.5 kg)
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Certifications: cETL
What's Included
- AlorAir Sentinel HD90 dehumidifier
- Air filter (installed)
- Supply duct adapter
- User manual
Setup & Placement
Seal the space first: AlorAir specifies a vapor barrier on the ground and sealed vents in a crawl space. Stand the unit level on blocks or pavers, not directly on the vapor barrier, so the condensate can drain. If it was tipped in transit, leave it upright for at least 2 hours before switching on.
Run the drain line downhill to a drain with no loops or dips, ideally into 3/4" PVC at a fall of at least 1" per 10', and test it before you leave. Allow 12" of clearance at the inlet and 36" at the discharge, and plug into a grounded 15 A GFCI circuit.
Resources
Warranty & Shipping
Warranty. Backed by AlorAir's 12-month limited warranty from the date of delivery, covering defects in materials and workmanship. AlorAir handles warranty service directly, so keep your proof of purchase and the original packaging.
Shipping. Ships direct from AlorAir's U.S. warehouse, with free shipping on orders over $100.
Inspect on delivery. Check the carton and the unit when it arrives and note any damage on the delivery receipt before signing.
About AlorAir
AlorAir Solutions is based in Chino, California, and supplies dehumidifiers, air movers and air scrubbers for crawl spaces, basements and water damage restoration. Its Sentinel line is built for permanent installation in the spaces under and around a home.
The HD90 shares its 90-pint cabinet with the Sentinel HDi90, which adds a built-in condensate pump, and the HDi90 Duct-able Version. For smaller crawl spaces, the Sentinel HDi65S covers up to 1,300ft², while the HDi100 and HDi120 step up to 100 and 120 pints a day at AHAM for larger basements.
