Abstract: The present invention provides an air purifier. The air purifier is economical and reliable. The air purifier uses water to purify air. The air purifier provides a provision for killing bacteria, algae and prevents mosquitoes from breeding in the water of the air purifier. The purifier includes a housing, an air inlet, an air outlet, an air flow channel, an air driving means and an air exhaust means, a fluid reservoir, a heating module, at least one nozzle, a tray and a fluid drive means. More particularly, in the present invention an atmospheric air is sucked into the air flow channel by the air driving means, wherein the air stream passes under a fluid spray, whereupon a dust particles, pollutants and particulate matters are absorbed by the fluid coming in contact with it and the filtered air exits through the air outlet.