The ratio of humidity and moisture content is an important indicator characterizing the state of humid air during operation of microclimate systems and is determined by the amount of steam contained in it. To maintain a certain amount of steam in the air, it is customary to use an air humidifier, which is a device that allows humidification of air inside of residential and industrial premises, as well as maintenance of technological processes where exact humidity parameters are required.

Humidifiers can be divided into two main groups: steam humidifiers and direct water vaporisation humidifiers. Steam humidifiers are a line of devices designed for use in supply and exhaust systems with low and medium air flow. Cellular humidifiers are used, as a rule, in air-handling units or central air-conditioners of high power or with a high air flow rate. In addition to residential use, air humidifiers are also widely used in industry: in precision manufacturing, in the pharmaceutical industry, in textile production, in data centers, modern digital telephone exchanges, in museum storages and archives, etc.

A surface honeycomb humidifier with an irrigated nozzle cross-sectional structure was first developed by Carl Munters. The humidifier is specially designed for operation as part of air treatment systems inside of living quarters and industrial buildings. The compact design and dimensions of fa6 allow it to be used in all commonly used air treatment plants.
A cellular humidifier is used in printing plants (printing shops, operative polygraphy sites, etc.), computer centers and automatic telephone exchanges, in the electronic and textile industries, vegetable stores, woodworking shops, museums, libraries, paint chambers in using water-based paints, when replacing irrigation cameras.