Air cleaning units; Air humidifiers; Air humidifying apparatus; HEPA filters for household use; Humidifiers for household purposes; Steam vaporizers for adding humidity to the air; Water purification and filtration apparatus; Water purification machines; Water purification units; Water purifying apparatus; Water filtration and purification units and replacement cartridges and filters therefor; Filtering units for attaching to water faucets; Filters for drinking water; Filters for fluids, namely, for water and area-water solutions; Plumbing fittings, namely, faucet filters; Water filtering units for domestic use; Air filtering installations; Air filtering units; Air purification units; Air purifiers; Air purifiers; Air purifying apparatus; Air purifying apparatus and machines; Electronic generator for use in controlling the amount of humidity in the air by creating, removing or circulating small water particles or water vapor in the air; Power-operated vaporizers for household purposes; Separators for the cleaning and purification of air