A hypochlorous acid generator includes a brine tank for holding salt and a brine solution, the brine tank having a water inlet in fluid communication with a source of pressurized water, a brine solution outlet and a salt fill port to allow salt to be added to the brine tank. The generator also includes an anode chamber in fluid communication with the brine solution outlet of the brine tank for receiving brine solution therefrom, and for generating anolyte, the anode chamber having an outlet for providing hypochlorous acid therefrom, and a cathode chamber in fluid communication with the brine solution outlet of the brine tank for receiving brine solution therefrom and for generating catholyte. The generator further includes a catholyte recirculating pump in fluid communication with the cathode chamber and the anode chamber, the recirculating pump being responsive to a control signal to recirculate catholyte generated by the cathode chamber to the anode chamber.