Abstract: A water vapor filtration and delivery system having a water inlet coupled to a source of water, a pump for pumping an amount of water from the water inlet, a filtration unit connected to the water inlet that removes all contaminants larger than 50 nanometers, and a nozzle having an outlet orifice for distributing the filtered water vapor into a stream of air. The water vapor filtration and delivery system includes a locator module coupled to a plenum or a wall of an air duct and having a base plate attached to the plenum, a locator plate removably attached to the base plate, and at least one hand bolt. There is a flexible hose between the filtration unit and the locator module configured to transfer water from the filtration unit to the locator module and a rigid pipe between the locator plate and the nozzle.