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Ventilation and air quality in the workplace

Learn about ventilation and air quality at work, how they affect health and wellbeing and how to take positive action to improve your workplace.

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What employers can do

MMonitor and assess your workplace
  • Carry out a risk assessment to identify poorly ventilated areas
  • Use CO₂ monitors as an indicator of ventilation effectiveness
  • Pay attention to areas that feel stuffy, humid or have persistent odours

Further guidance can be found on the HSE website.

Improve ventilation
  • Open windows, vents and doors where safe to do so (do not prop fire doors open)
  • Ensure mechanical systems are functioning correctly and maintained
  • Maximise fresh air intake where possible, especially in recirculating systems

Visit the HSE website for more information about improving ventilation.

Engage and inform employees

Involving employees can help identify issues and solutions.

Encourage staff to consider:

  • how fresh air enters their workspace
  • whether ventilation systems are working effectively
  • what changes could improve airflow
  • whether any areas feel uncomfortable or poorly ventilated

Provide training on:

  • the importance of ventilation
  • how to use systems correctly
  • reporting concerns
Create a healthier environment
  • Introduce indoor plants where appropriate to enhance wellbeing
  • Combine ventilation improvements with wider workplace wellbeing initiatives

Find out more about connecting with nature at work and mental health and wellbeing at work.

Page last reviewed: 18th June 2026