Patent ID: 7572179

Claim:
A ventilation system comprising: a ventilation module positioned adjacent to an inside space and having a heat exchanger submodule; an IAQ module positioned adjacent to an outside space for improving quality of air passing through the ventilation module, the IAQ module being structured to receive at least one of a filter submodule, a dehumidifier submodule, and a humidifier submodule, to receive two of said submodules simultaneously, as well as to receive all three of said submodules simultaneously; and a casing for guiding air that consecutively passes through the ventilation module and the IAQ module, the dehumidifier submodule and the humidifier submodule each being structured to be selectively independently mounted on and dismounted from the casing as integral units, an inside wall of the casing having an opening for admitting outside air to the inside space and an other opening for drawing inside air to the outside space, an outside wall of the casing having an opening for drawing outside air into the inside space and an other opening for exhausting inside air to the outside space, wherein the inside and outside walls of the casing define opposing walls of the ventilation system, wherein outside air being introduced into the inside space through the casing sequentially passes through the filter submodule, the dehumidifier submodule, the heat exchanger submodule, and the humidifier submodule and is then discharged to the inside space.