The Alorair Sentinel HD90 dehumidifier provides efficient dehumidification in spaces up to 2,600 square feet in size. This crawl space dehumidifier has a horizontal design that fits perfectly in crawlspaces or other basement areas. The HD90 can operate in temperatures down to 34°F and features a hot gas defrosting system to clear ice from the dehumidifier's coils. The Sentinel HD90 offers other desirable features including bucket-full protection, an R410A refrigerant and a remote humidistat. The Alorair Sentinel HD90 dehumidifier will efficiently and effectively relieve moisture issues in your home or commercial setting.