Abstract: An air purification system for a central air conditioning unit for effectively purifying air for central air conditioning systems. The air purification system for a central air conditioning unit includes a pan assembly including a pan member having bottom and side walls, and also having a plurality of ports being spaced about and being disposed through the bottom wall with the pan member being adapted to hold water and to be disposed in a duct for a central air conditioning system; and also includes a plurality of air intake members being disposed in the ports of the pan member; and further includes cap assemblies including a plurality of tubular cap members being spaced above and disposed about the air intake members.