An ozone generator with a disposable emitter cartridge preferably includes two emitter cartridges, a protective housing, a high voltage generation circuit and a power supply. The disposable emitter cartridge preferably includes an anode element, a cathode element and an insulating spacer. The anode element includes a plurality of emitter projections. The cathode element includes a base plate with a plurality of openings. The anode element is attached to one side of the insulating spacer and the cathode element is attached to an opposing side. The protective housing preferably includes a base portion, an emitter housing and a pair of vent caps. The two emitter cartridges are removable retained on the base portion. The power supply supplies electrical power to the high voltage circuit. The high voltage circuit supplies high voltage to the two emitter cartridges. Electrical current arcs from the plurality emitter projections to the plurality of openings.