SERVPRO of Katy Cypress and Champions 1960 Desiccant dehumidifiers have many applications in restorative drying, but they are most commonly used to dry materials such as hardwood floors, and lathe walls, or other dense material. Desiccant effectively accelerate drying inside walls when used in conjunction with air movers. Desiccant dehumidifiers depend upon a chemical attraction to remove water from air. They produce the lowest vapor pressure of any dehumidifier. Moist air passes through a desiccant rotor collecting on silica gel material embedded on rotor. They are for indoor use only and do not operate at air temperature over 120 f. Avoid damages or clogging of rotor, always operate with clean Merv 8 filter. They operate vertically or horizontally , if necessary, use extension cords with minimum 6 AGE rated not less than 9600 watts.