Humidity Group

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The Membership of the Humidity Group

Members Membership is open to any company or organisation with an interest in the control of Relative Humidity.

Why use a Group Member?

The membership is committed to the correct application of Humidification and so can be relied upon to provide impartial guidance with applications. Click for a list of members.

Downloads from the group

  HEVAC Humidity Group Members and Products April 2016
Matrix showing members and the product types they supply

  HUMIDITY AND THE IMPACT ON HUMAN COMFORT 25.04.16
Describes the options available to minimise the potential power consumption

  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  www.cibseknowledgeportal.co.uk

  The Humidity Group Leaflet
This explains the Humidity Group's objectives, why humidity is important and why you should use a Humidity Group member. Energy Efficiency Statement

  HUMIDITY GROUP Energy Efficiency statement (3.3.06)
Describes the options available to minimise the potential power consumption

  Humidity Group Application Guide (494Kb)
This guide explains the importance of humidification, the guidelines for comfort conditions and how to humidify the air. It includes a glossary of humidification systems and a table showing advantages/disadvantages for different humidification systems and applications.

The Humidity Group members understand the dangers of legionella and take every precaution to minimise the risk to their customers’ installations.  The following Codes of Practice contain detailed information on the necessary processes.

  Code of Best Practice 1 Cold Water Humidification Systems
HEVAC Code of Best Practice for the design, installation and maintenance of humidification systems to reduce microbial contamination risk in cold water humidification, misting and fogging systems.

  Code of Best Practice 2 Atmospheric Steam Humidification Systems
HEVAC Code of Best Practice for the design, installation and maintenance of steam humidification systems of the atmospheric, self generating type.

    Code of Best Practice 3 Live Steam Humidification Systems (Isothermal) - revised Jan 2014
First published in September 2012 and revised in January 2014, a Code of Best Practice for the design, installation and maintenance of steam humidification systems of the live steam type.

  Code of Best Practice 4 Planned Maintenance - 0.6MB added 28 January 2010
This guide provides information and advice on good practice in the commissioning and maintaining of a wide range of different types of humidifier. It is intended for anyone who has an interest in running humidifiers efficiently, effectively and safely, such as maintenance organisations, service personnel, facilities managers, end users and building services consultants. As such, it is orientated towards planned, preventative maintenance rather than taking a reactive break/fix approach.

Other Downloads

  HSE L8 Approved Code of Practice and guidance
Legionnaires’ disease - The control of legionella bacteria in water systems.
Also available to download from HSE website

  TM13 Minimising the Risk of Legionnaires' Disease

Revised and published in 2013

Available to download from the CIBSE bookshop www.cibseknowledgeportal.co.uk

TM13 was last reviewed in 2002. Over this time CIBSE has seen technology advances and environmental concerns lead to changes in the design and operation of water system to manage the risks of Legionella. The last ten years have also seen England, Scotland and Wales experience their worst outbreaks of Legionnaires’ disease to date, thus showing why Legionella control remains such a high profile public health issue.

While many of the basics of good Legionella control and building services management remain largely the same, CIBSE's understanding of the risks, processes and schemes by which people can maintain control and demonstrate compliance with regulatory requirements have developed.

With this in mind TM13 was updated and revised in 2013 to provide the information needed to support the effective management of the risks and demonstrate pro-active compliance.