Patent ID: 7585210
Filing Date: 2009-09-08
Classification: F24F

Abstract:
1. A system for drying a crawlspace in a home and for reducing a mold level in the crawlspace and in a living area of the home, wherein a negative air pressure that is created in the crawlspace generates a negative air pressure in the living area of the home thereby creating beneficial air exchanges in the living area of the home with fresh air from outside the home, the system comprising: multiple vent covers, wherein the vent covers are designed to fit over and seal existing vent openings in the crawlspace so that outside air can no longer freely flow into the crawlspace, and wherein the vent covers aid in changing the air pressure in the crawlspace from positive to negative; at least one floor register that provides controlled airflow from the living area of the home into the crawlspace so that the negative air pressure in the living area is created, each floor register having an upper portion that at least partially extends into the living area and a lower portion that extends into the crawlspace, wherein the lower portion includes a one-way airflow valve; an array of multiple air movers inside of the crawlspace with substantially equal spacing send air from one air mover to another so that a circular airflow of at least 1,400 CFM is created in the crawlspace wherein, each air mover comprises a fan, an upper and lower shroud that can be separated into top and bottom halves, and a support bracket that supports the fan within the shroud, each air mover is capable of being at least partially disassembled so that each can fit through a standard crawlspace door; and, at least one exhaust fan that pulls damp air from the crawlspace and exhausts the damp air to an outside thereby generating the negative air pressure in the crawlspace, the negative air pressure in the crawlspace creating a pull of air from the living area, through the floor register and into the crawlspace, wherein each of said at least one exhaust fan includes an exhaust vent that is adapted to fit within an existing vent opening in the crawlspace and wherein, each exhaust vent includes a one-way valve that prevents outside air from entering the crawlspace, and further wherein air from the living area circulates in the crawlspace before being exhausted to the outside.