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Ductwork Cleaning & Air Monitoring

Having a fresh air supply to be distributed in your workplace is key to safe, comfortable and efficient working conditions.

Hygiene Contracts can ensure this by providing a complete duct cleaning service in accordance with TR/19. An essential factor is that the heating ventilation and air conditioning ductwork system must be kept clean. All ductwork systems can build up unwanted dust and associated debris which can cause harm to the buildings users. This can be controlled and maintained by Hygiene Contracts creating a cleaning programme that suits your ventilation systems.

Services that Hygiene Contracts provide include:

  • Duct Cleaning
  • Local Exhaust / Air Intake Cleaning
  • Ductwork Monitoring and Sampling
  • AHU Clean and Filter Replacement
  • Disinfection of Systems
  • Access Door Installation
  • Validation and balancing of ductwork systems
  • Fire Dampers

With the use of a variety of extraction devices along with specialised mechanical brushes, air jets and manual cleaning methods Hygiene Contracts can remove all types of contamination where microbiological contamination is an identified issue and we will
disinfect where necessary. Many ductwork systems have insufficient
access points to enable cleaning, Hygiene Contracts will install access doors throughout your system to enable regular inspection as well as a more efficient clean.

When sampling or visual inspection indicates that the cleaning of the internal duct surfaces is required, Hygiene Contracts are able to offer a solution.

Hygiene Contracts provides complete duct cleaning services throughout the UK,, Europe and the World in accordance with the requirements of TR/19, the leading guidance document issued by the B&ES Association; British Standard and European Norm BSEN:15780; and BG49/2013, BSRIA’s guide on Commissioning Air Systems. All three sets of guidance now agree on the way to ensure appropriately clean ductwork both at commissioning stage and during service to ensure safer and healthier buildings.

To be compliant with TR/19, ventilation supply and extract ductwork must be classified at one of three levels, according to the area of the building that it serves. Each system must be classified as high, medium or low, in order to reflect the purpose and function of that area of the property. This means that there can be different classifications for individual zones within the same building or complex.

You may need expert help and guide you to determine which category or categories your ventilation systems fall into and how often the ductwork should be tested and cleaned as a result, according to the tables set out in TR/19. Hygiene Contracts can advise on system access design and installation and specialises in devising tailored hygiene maintenance schedules to ensure that you achieve compliance with TR/19, and stay compliant in the most cost effective way in each property for which you are the appointed responsible person.
Dirty air ducts and ventilation systems can affect your business in a variety of costly ways, these can include; a drop in productivity, low employee morale, computer downtime, ruined interior decorations and high capital expenditure to replace prematurely deteriorated air conditioning systems.

What is even more of a concern is the very real threat to building managers of prosecution, should ducts not comply with the regulations of the Health and Safety Commission, which state that ventilation systems should be cleaned, as appropriate and subject to ‘a suitable’ system of maintenance. The level of appropriateness is defined clearly in TR/19 second edition and also BS EN 15780 and depends on the usage classification of the building in question.

It is important to note that a ventilation system, through which the air that we breathe passes, typically has an internal surface area equivalent to 10% of the space that it serves. This puts into context the importance that should be placed on appropriately managing the hygiene within any ventilation system.

Your Responsibility

To ensure compliance with the Regulations and associated Approved Code of Practice from the Health and Safety Commission which states that all mechanical ventilation systems should be regularly and properly cleaned, tested and maintained to ensure that they are kept clean and free from anything which may contaminate the air.