







Price: $594.71
(as of Sep 23, 2026 21:22:04 UTC – Details)
From the brand




New & Upgraded Release
Optional Hanging Kits
Extra 3 in 1 Accessory Package
Energy Star Dehumidifier
70 PPD Crawlspace Dehumidifier
Wi-Fi Crawlspace Dehumidifier
High-Capacity Dehumidifier
198 PPD Dehumidifier
Heavy-Duty Dehumidifier
Whole House Dehumidifier
Optional 6in Riser Kit 4-Pack
Extra 1P Merv-1 for HD55S/i65S
Extra 1P Merv-8 for HD55S/i65S
Extra 1P Merv-1 for HD35P/HS35
Extra 1P Merv-1 for 60/60P/85P
Extra 1Pack Merv-1 for HD55P
Powerful Crawl Space and Basement Dehumidifier With Built-In Pump: The Sentinel HD55P is designed to control excess moisture in crawl spaces, basements, garages, storage areas, and other humidity-prone environments. It removes 55 pints per day at AHAM conditions and up to 120 pints at saturation, providing reliable moisture control for spaces up to 1,300 sq. ft. Its compact design and efficient airflow make it a practical solution for both residential and light commercial applications
Advanced Coil Protection for Longer Service Life: The unit features advanced internal corrosion protection, helping reduce coil damage caused by moisture-related oxidation, hydroxide, and sulfide exposure. This protection helps minimize refrigerant leakage while maintaining consistent heat transfer efficiency, extending the overall service life of the system
Automatic Defrost for Low-Temperature Operation: The built-in automatic defrost system monitors ambient temperature and prevents frost buildup on internal components. When low temperatures are detected, the compressor temporarily pauses while the fan continues running to melt frost. Once the cycle is complete, the unit automatically resumes normal operation, helping maintain efficiency and protect internal components
Designed for Crawl Spaces and Basements: Built with durability and convenience in mind, the Sentinel HD55P includes features such as low-temperature operation, a washable MERV-1 filter, and optional remote control compatibility. These features make it suitable for moisture control in crawl spaces, basements, and other enclosed areas where consistent humidity control is essential
6-Year Limited Warranty & ETL Listed: This AlorAir crawl space dehumidifier is ETL listed for safety, backed by 6-year limited warranty – first 2 years full coverage with professional customer support ready to help whenever you need it
Customers find the dehumidifier performs well, with one reporting it reduced humidity from 70% to 45% in 24 hours, and they appreciate its relatively quiet operation and easy setup and maintenance. The build quality is positive, and customers consider it worth the investment. However, durability is a concern as units fail after 3 weeks or within a year, and there are issues with leakage.

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