Filter unit and ionizing unit combination

Apparatus for introducing filtered, ionized air into a room comprising:

• (a) a filter unit including an air impervious housing having an air inlet on one face, an air discharge face opposite the air inlet, and filter material in the housing between the air inlet and the air discharge face,
• (b) an ionizing unit comprising a plurality of ionizing points, means supporting said ionizing points in positions distributed across the discharge face of the filter unit comprising insulated conductor means, means capacitively coupling said ionizing points to said conductor means, and conductive tubular means having said conductor means extending therethrough,
• (c) conductive frame means extending around said ionizing unit and including means for supporting said ionizing unit therein, said frame means conforming in size and shape to the air discharge face of the filter unit, and means for electrically connecting said frame means to said conductive tubular means,
• (d) means for securing said frame means to said filter unit housing at the discharge face thereof, and
• (e) sealing means for preventing the passage of air between said filter unit housing and said frame means.