The Sentinel HD55 is a perfect device for crawl spaces and basements. With an updated compact design and smaller size, this unit can be installed very easily in a low-clearance crawl space or tight basement. But please don't be fooled by its appearance, it can remove 120 Pints at saturation(55 PPD at AHAM). Features 120 PPD Dehumidifier quickly and effectively removes moisture with less energy than conventional dehumidifiers without racking up the energy bill, saving money. It will be the best crawl space/basement dehumidifier you will ever use. Remove 55 pints per day at AHAM condition,120 Pint at saturation, up to 1,300 sq. ft, fit for any basement, crawl space, storage areas, garage, large room, or commercial use. Automatic Defrost a quick and efficient defrosting process, truly makes the dehumidifier able to work at a low temperature (36 degrees Fahrenheit), if frost is detected on the coils, an automatic defrost cycle runs to avoid frost build-up and issues associated with that build up. It makes the unit work continuously and efficiently without periodic stopping during the defrosting process, saving energy and making the unit last longer. An advanced technology to minimize corrosion and freon leakage, as you know, in dehumidification applications, there is always get oxide, hydroxide, or sulfide; regular coils get corrosion and freon leakage quickly; this innovative feature extends the life of the coils by providing protection against, maintaining the coil's heat transferability. For the satisfaction, we designed this professional dehumidifier with the modern consumer in mind. All special features make it the best for crawlspace, basement, and commercial applications, auto defrosting system, optional Remote control system, MERV-8 filter, Low-temperature