Is it a legal requirement?
Under the Health & Safety at Work Act etc 1974 and the Occupiers Liability Act 1984, there is a legal duty for an employer to provide a safe and healthy environment, which includes a healthy indoor atmosphere. There is a requirement to ensure that ductwork is regularly cleaned as appropriate and is subject to ‘a suitable’ system of maintenance. There are also legal expectations in other settings, such as accommodation and public facilities such as hospitals. The leading guidance document concerning the hygiene of ventilation systems is TR19®, which has now become the accepted standard for the internal cleanliness of ventilation systems and ductwork cleaning.
We utilise a negative air mover, triple motor vacuum unit, rotary brush system.
We laboratory test all systems for TR19 compliance post clean using a dust volume test.