The National Association of Air Duct Specialist UK (NAADUK) has reviewed and updated their guidance document for their members and all building managers. The 2nd Review gives further clarification and understanding of the importance of ventilation and ventilation systems to help fight against the Coronavirus.

It is now acknowledged worldwide and by the UK Government that a clean ventilation system assists in keeping the indoor air quality free from airborne infections. Equally, waste systems within a building also have an impact on the airborne infection. Further guidance is documented in the NAADUK Review.

Published in August 2020, the World Health Organisation (WHO) document COVID-19 Management in Hotels and Other Entities of the Accommodation Sector: Interim Guidance states: “Ventilation is an important factor in preventing spread of the virus that causes COVID-19.

“If HVAC systems are used, they should be regularly inspected, maintained, and cleaned. Rigorous standards for installation and maintenance of ventilation systems are essential to ensure that they are effective and safe. Attention should be given, as in normal circumstances, to monitoring the condition of filters and, if possible, increasing the central air filtration as high as possible without significantly diminishing design airflow”.

The WHO document also recommends that consultation with a heating, ventilation, and air conditioning (HVAC) professional should be carried out.

Peter Reid, President of NAADUK, said: “It is crucial that the spread of the Coronavirus can be reduced


Luton Borough Council has been sentenced after a teacher was assaulted by a pupil.

Luton Crown Court heard how on 17 June 2016, the assistant head teacher at Putteridge High School was called to deal with a disruptive pupil who was refusing to go into a detention room. After clearing the classroom of the other pupils, the pupil launched a sustained assault on the teacher, using a mobile phone and inflicting life-changing injuries.

An investigation by the Health and Safety Executive

(HSE) found that there were significant shortcomings in relation to the measures at the school, regarding violence and aggression posed by the pupils to others. No effective consideration was given to the risk of injury or death posed by the pupils to others and


measures were not taken to reduce that threat to as low as reasonably practicable.

Luton Borough Council did not ensure that the school had people with sufficient competence in the management of health and safety involved in running the school to ensure that the threat was addressed. The Council did not see to it that staff members at the school had the training either to remedy that shortcoming or to deal with violent and aggressive pupils in a way which did not expose them to risk. The council also failed to monitor the adequacy of the measures Putteridge High School had in place and the council therefore failed to pick up and address the shortcomings.

Luton Borough Council of Town Hall Upper George Street Luton pleaded guilty to breaching Section 2(1) of the Health and Safety at Work etc Act 1974 and was fined £104,000 with £60,000 costs. The fine was reduced from £300,000 due to the Council’s lack of revenue as a result of the Coronavirus pandemic.

by maximising a clean ventilation system. However, anecdotal evidence proves that many systems are not clean to relevant standards.

We encourage all our members to promote to their clients the importance of cleaning and maintaining the ventilation systems on a regular basis.”

The 2nd Review guidance note is available freely on the NAADUK website here.

The updated NAADUK guidance is supplementary to all government guidelines in relation to social distancing, hand washing, essential travel, staying at home, and so on. The scope is limited to commercial and public buildings such as offices, factories, schools, and hotels where normal social transmission is possible. Hospitals and healthcare facilities are excluded due to the higher risk of contact with COVID-19 and the specialised work procedures required.

NAADUK was established in 2014 and holds the first register for qualified trained duct cleaners who have been taught by an accredited training provider in the UK.

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