An improved air filter assembly for removing particles from air flow across the filter assembly utilizing a tackifier material. The air filter assembly comprises a peripheral frame adapted to be supported in communication with an intake opening in a residential return air duct; and a filter media mounted within the frame for removing particulate from air flowing from an upstream side of the filter assembly to a downstream side of the air filter assembly. The downstream side of the filter media comprises a layer of filter media treated with a tackifier material or a sticky oil.