AlorAir Sentinel HD55 Crawl Space & Basement Dehumidifier

Pull Up to 113 PPD and Cover 1,200 Sq.Ft. With One Crawl Space Dehumidifier

The AlorAir Sentinel HD55 is a heavy-duty crawl space dehumidifier built to keep humidity locked between 36% and 90% — automatically, and without you lifting a finger.

You set it once and walk away. No hauling water buckets, no checking tanks, no guessing if it's actually working. It drains itself by gravity, restarts itself after a power outage, and keeps running even when your crawl space drops to 36°F.

A Basement Dehumidifier Engineered to Run Itself

The rare earth alloy tube evaporator resists corrosion and freon leakage, so the coil lasts longer and performs better, year after year.

• Auto Defrost Technology — worried about it freezing up in a cold crawl space? It keeps working reliably down to 36°F.
• MERV-1 Filter — dust and debris eventually kill internal components; this filter keeps them protected.
• Gravity Drainage — skip the daily tank-emptying routine entirely; it drains on its own.
• Auto Restart — a power outage won't wipe your settings; it remembers and resumes automatically.
• Automatic Diagnosis System — no more guessing what's wrong; error codes give you clear troubleshooting tips.
• cETL Certified — built and tested to handle rugged crawl space and basement conditions.
• Adjustable Foot Pad & Portable Handle — install it, move it, or level it without a struggle.

Go Beyond the Basics With a WiFi Dehumidifier That Reports Back to You

The HD55 Blue WiFi and HD55S WiFi models connect to the free AlorAir-C app, so you never have to physically check the unit to know it's doing its job.

• Smart Remote Monitoring — worried it's not running while you're away? Check real-time humidity and settings from your phone, anywhere.
• No Manual Emptying — there's no internal tank to check hourly; it's fully automatic gravity drainage.
• Energy Star Certified (HD55S WiFi) — as an energy star dehumidifier, it delivers a higher COP of 2.4 L/kWh for lower running costs.
• Rotary Compressor (HD55S WiFi) — built to resist short-cycling, which means a longer service life for the unit.
• Remote Humidistat — dial in precise humidity control instead of rough estimates.

AlorAir Sentinel HD55 Crawl Space Dehumidifier Specifications

Technical Documents

For complete specifications, download the technical data sheet above.

Stop Moisture Before It Becomes a Problem

Hit the Buy Now button and we'll get your AlorAir Sentinel HD55 shipped within 1-3 business days.