Indoor Air Quality


Mold can occupy many parts of a building and spreads easily. Exposure to mold can lower the quality of living and result in serious health concerns. Strong, unpleasant odors, discolored areas and high levels of humidity may indicate that mold is growing. Safeguard the integrity of your air quality by removing it with a trained professional.

The indoor air space is comprised of a multitude of elements from a variety of sources. SEINC IAQ consultants will determine the content of these elements, and assess their effectiveness to occupant health

Indoor Air Quality (IAQ) refers to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants. Understanding and controlling common pollutants indoors can help reduce your risk of indoor health concerns.

Health effects from indoor air pollutants may be experienced soon after exposure or, possibly, years later.


Some health effects may show up shortly after a single exposure or repeated exposures to a pollutant. These include irritation of the eyes, nose, and throat, headaches, dizziness, and fatigue. Such immediate effects are usually short-term and treatable. Sometimes the treatment is simply eliminating the person’s exposure to the source of the pollution, if it can be identified. Soon after exposure to some indoor air pollutants, symptoms of some diseases such as asthma may show up, be aggravated or worsened.

The likelihood of immediate reactions to indoor air pollutants depends on several factors including age and preexisting medical conditions. In some cases, whether a person reacts to a pollutant depends on individual sensitivity, which varies tremendously from person to person. Some people can become sensitized to biological or chemical pollutants after repeated or high level exposures.

Indoor pollution sources such as VOC’s, and high emission building material that release gases or particles into the air are the primary cause of indoor air quality problems. Inadequate ventilation can increase indoor pollutant levels by not bringing in enough outdoor air to dilute emissions from indoor sources and by not carrying indoor air pollutants out of the area. High temperature and humidity levels can also increase concentrations of some pollutants.

Outdoor air can enter and leaves a building by: infiltration, natural ventilation, and mechanical ventilation. In a process known as infiltration, outdoor air flows into buildings through openings, joints, and cracks in walls, floors, and ceilings, and around windows and doors. In natural ventilation, air moves through opened windows and doors. Air movement associated with infiltration and natural ventilation is caused by air temperature differences between indoors and outdoors and by wind. Finally, there are a number of mechanical ventilation devices, from outdoor-vented fans that intermittently remove air from a single room, such as bathrooms and kitchen, to air handling systems that use fans and duct work to continuously remove indoor air and distribute filtered and conditioned outdoor air to strategic points throughout the house.

Click Here for an interactive tour of the IAQ Demo House, and click on the rooms. Apply the “text version” if using a mobile device.

Use the resources area for more information.

References & Resources


EPA. gov


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According to the Healthy Homes Rating System Operating Guidance the following are the health and safety hazards examined by home inspections:

  • Damp and Mold Growth
  • Lead
  • Lighting
  • Cold Radiation Noise Heat Uncombusted fuel
  • Domestic/Persomnal Hygiene
  • Asbestos
  • Volatile organic compounds
  • Biocides
  • Carbon Monixide
  • Water supply
  • Crowding of space
  • Electrical/Fire Hazards
  • Ergonomics
  • Falls

Greener Cleaning Supplies = Fresh Air+healthier Indooe Environment

Indoor Air Quality

Poor indoor air comes from:

1-What people do in their home (smoking, pets, hobbies) and

2-What people have in their homes (products, new furniture, carpeting)

Poor Indoor Air Quality can be affected by:

1-Inadequate ventilation

2-Improper or inadequate HVAC systems.