How to Specify: Industrial Humidifiers


Industrial humidifiers are used in the heating, ventilation and air conditioning (HVAC) systems of office complexes, as well as in a variety of commercial and industrial plants and facilities. Precise regulation of humidity is imperative in many industrial environments and for a wide range of application processes.

Why is Humidifier Selection Important?

Industrial humidifiers add moisture to warm, circulated air in order to create a comfortable environment and alleviate the discomfort of dry air. Controlled humidity levels can also protect equipment by reducing static electricity.

In industries that have specific humidity requirements, using the wrong type of humidifier can lead to adverse effects on materials, equipment, and overall efficiency. Selecting the appropriate industrial humidifiers helps conserve energy and minimize operational costs. Unnecessary expense in the form of wasted energy can be avoided by accurately matching the humidification system to the facility’s needs. Also, properly specified humidifiers are more likely to deliver better performance and reliability, while also reducing downtime and maintenance costs.

Factors to Consider When Specifying an Industrial Humidifier

Numerous factors that should be taken into consideration to ensure that the correct type of humidifier is selected and installed for a particular application. Here are some things to things to consider:

Type of Humidifier

Not all types of industrial humidifiers are the same. Each type has advantages and disadvantages, depending upon the application. Evaporative (adiabatic) humidifiers and cooling systems add water molecules to the air to increase relative humidity and lower the temperature. Steam (isothermal) humidification systems raise humidity levels to restore optimal indoor climate.


Capacity is the amount of steam or vapor that industrial humidifiers can generate in a fixed amount of time. The capacity of the humidifier should be matched to the size of the space to be humidified, and the desired level of humidity control.

Control System

The control system of the humidifier should be matched to the specific application requirements. The ability to control temperature, relative humidity and saturation efficiency are all important factors. Selecting a humidifier with precise controls is the key to developing a system that is effective and efficient for your project.

Maintenance Requirements

The recommended maintenance of the humidifier should be taken into consideration. Water requirements, filter changes, cleaning, and other necessary maintenance tasks should be reasonable and practical for your maintenance team.

Energy Efficiency

Energy-efficient humidifiers can save money on energy costs and reduce the environmental impact of your operations. The energy efficiency of the humidifier should be evaluated to ensure that it is not consuming excessive amounts of energy.

Air Systems is Your Source for Industrial Humidifiers

Air Systems offers innovative industrial humidifiers for evaporative humidification and comfort cooling. Our systems include media based single bank, multi-bank, face and bypass, as well as air washers and spray coil design humidifiers. We supply individual or central feed systems and complete turnkey systems with humidifier and water train controls. Units can ship fully assembled or “knocked down” erector style for field assembly.

Air Systems industrial humidifier design features:

  • Temperature & humidity control of up to +/- 1% RH
  • Custom design fabricated from either galvanized or stainless steel material
  • Media or spray style
  • Maximum airstream temperature: 150 degrees F
  • Unlimited size and CFM
  • Typical lead time of 8 weeks

When you work with Air Systems, you have the advantage of value engineered designs and over 60 years’ experience in the design, build, and servicing of evaporative humidification systems for industrial and commercial applications. Need an upgrade? We can retrofit into an existing Air Handling Unit (AHU) or an Air Make-Up Unit (AMU).

Contact the team at Air Systems to learn more about how we can assist with your project.