An air purifying system for an indoor space includes a plurality of air purifying sites, each one of the plurality of air purifying sites configured to treat a sub-volume of the total volume of air in the indoor space, wherein each one of the plurality of air purifying sites includes a housing, an air inlet configured to direct treatment air having gaseous and non-gaseous components from the indoor space into the housing, a purifier carried within the housing, an air outlet configured to direct the treatment air that has passed through the purifier into the indoor space, and an air mover configured to move air between the air inlet and the air outlet, through the purifier, wherein the plurality of air purifying sites is configured to work cooperatively with a central air system of the indoor space.