Humidity Group

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‘Essential for quality of Life’

The Humidity Group was formed expressly to create awareness and understanding of the importance of Humidity in Commercial, Industrial and Domestic environments.

Group Objectives

  • To promote an understanding of the importance and benefits of correct Humidity Control.
  • To work with the HEVAC Association, to actively promote national and international policies relating to Humidity Control.
  • To participate in the drafting of UK regulations, codes of practice and European Standards relating to Humidity Control.
  • To prepare and publish information that will assist those responsible for the selection and application of humidity control equipment (Humidifiers, Dehumidifiers, Humidity Sensors etc..), as well as the commissioning and maintenance of this equipment.

Evaporative Cooling Guide

This guide includes a description of evaporative cooling; comparison of mechanical cooling and evaporative cooling; incorporation of evaporative cooling systems; technologies; hygiene; typical applications and terminology.  Download

KS 19 –Humidification

The HEVAC Humidity Group has produced a joint publication with CIBSE as part of the Knowledge Series : KS 19 –Humidification. It is available in PDF format or printed copy from the CIBSE bookshop at

Why is Humidification Important?

Humidity is essential for a great many Industrial, Commercial and Domestic situations.

Maintaining a Relative Humidity (RH) of 50% contributes to a healthy and comfortable environment. It also eliminates the build-up of static electricity.

Let the RH fall below 35% and staff will start to suffer from dry eyes, respiratory problems and electric shocks. The Close Control of Humidity is also important to many industrial processes, where it helps to optimise quality and productivity. It also helps to provide the correct environment for the storage of products and produce and their preservation.