Occupational hygiene service

Indoor Air Quality Assessments

IOM assesses indoor air quality, investigates the likely causes of concerns and provides practical recommendations to improve conditions and protect people.

Service overview

What could be affecting your indoor air quality?

Poor indoor air quality can affect health, comfort and concentration. Concerns may arise from inadequate ventilation, airborne particles, volatile organic compounds, excessive humidity, mould or uncomfortable temperatures.

The cause is not always obvious. Building systems, occupancy levels, work activities and outdoor pollution can all influence indoor conditions. Without reliable evidence, organisations may struggle to resolve complaints or decide what action is needed.

When this service may be needed

  • Employees are reporting poor air quality, discomfort or recurring symptoms in the workplace
  • There are concerns about ventilation, temperature, humidity, odours or airborne contaminants
  • Mould, damp or other potential sources of indoor air pollution have been identified or suspected
  • You need independent evidence to investigate complaints and decide what action is needed

Practical support

How IOM can help

IOM investigates indoor air quality concerns using monitoring, workplace observations and a review of how the building is used.

Depending on the issue, we can assess:

  • Ventilation performance
  • Carbon dioxide
  • Temperature and humidity
  • Airborne particles
  • Volatile organic compounds
  • Mould and biological contaminants
  • Other suspected sources of pollution

We agree the scope with you so that the assessment focuses on the concerns affecting your workplace.

From evidence to action

Turning evidence into action

We interpret the findings, identify likely causes and recommend practical improvements. These may include changes to ventilation, maintenance, occupancy, cleaning or the management of contaminant sources.

Our independent assessment gives you the evidence needed to respond to concerns, prioritise improvements and provide reassurance to employees.

Talk to our occupational hygiene team about an indoor air quality concern.

What the service includes

Assess whether ventilation is appropriate for the space and occupancy.
Measure carbon dioxide, temperature, humidity and airborne particles.
Assess volatile organic compounds, mould and biological contaminants where relevant.
Consider building systems, occupancy, activities and outdoor influences.

What you receive

Clear evidence and usable next steps

  • Monitoring results focused on the reported concern
  • Identification of likely contributing factors
  • Practical recommendations for ventilation, maintenance, occupancy or cleaning
  • Independent evidence to respond to concerns and prioritise improvements

Get practical advice for your organisation.

Request a quote

Tell us what you need to achieve and your enquiry will be directed to the most appropriate team.

Speak to an expert