Indoor Air Quality

Indoor air quality is an important issue, whether addressing employee concerns and complaints in the workplace or gaining LEED certification for new or renovated buildings. Poor indoor air quality may affect employee health, leading to financial losses, regulatory orders and fines, or even criminal prosecutions.

Indoor air quality (IAQ) complaints can range from vague symptoms, including headaches, or general symptoms of malaise to sometimes serious illnesses. 

Poor IAQ may decrease productivity, affect employee moral and regulatory compliance levels as well as increase costs from potential operational issues, worker absenteeism and compensation claims.


What Factors Contribute to Poor Indoor Air Quality?

Several factors can contribute to poor air quality, including:

  • Off-gassing from office furniture
  • Mould growth
  • Cleaning materials
  • Personal care products
  • Lack of adequate ventilation or make-up air
  • Outdoor air pollution

How Is Indoor Air Quality Evaluated?

A typical assessment may include some or all of the following:

  • Interviews with occupants
  • Facility inspection
  • Evaluation of ventilation systems
  • Air quality monitoring
  • Mitigation planning
  • Training
  • Follow-up assessment

How Can LEHDER Assist?

LEHDER uses a practical methodology designed to economically resolve IAQ problems, with capabilities including:

  • Monitoring for chemical and biological agents
  • Ventilation measurements and determination of airflow patterns
  • Illumination measurements and assessment
  • Odor and noise measurements where appropriate
  • Ergonomic assessments


For more detailed information on Indoor Air Quality, please contact:

Marnie Freer

Penny McInnis

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