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Coronavirus support and information

Local information on coronavirus including service changes, business support, how to get help and vaccinations.

Pollution Control - Air Handling Units

About Air Handling Units

Air handling units are placed in buildings for many reasons. They are a potential source of nuisance and can post a health risk if they're poorly maintained. This is particularly the case with air conditioning units linked to an evaporator or a wet cooling tower.

All premises where cooling towers and evaporative condensers are used must register with the local authority under the Notification of Cooling Towers and Evaporative Condensers Regulations 1992.

This allows us to identify potential areas that could give rise to spread of infectious disease like legionella and to ensure the risk of infection to employees and the public is reduced.

Ventilation and air conditioning systems that are poorly installed or maintained may be a health risk to the public. For example, those that use evaporative cooling may pose health risks if they are not maintained properly. Make sure your air handling units are serviced regularly and follow the instructions by the supplier or manufacturer.

Environmental Health can give advice and guidance on all the safe installation and maintenance of ventilation systems. We may ask for detailed plans to be submitted for inspection before the installation of new units. There may be specific issues when air handling units are installed in catering establishments due to the potential for nuisance smells.