Air Quality Test – What Is It?

An air quality test is a process by which the air in an environment is sampled and analyzed to determine the presence and concentration of physical and biological contaminants, such as mold spores, allergens, volatile organic compounds, and particulate matter. These tests are essential for assessing the healthfulness and safety of an indoor environment, whether it be a home, workplace, or school. Poor air quality can lead to a host of health problems, including allergies, respiratory issues, and even severe diseases in the long term.

Air quality test – what is it, and why do you need it?


The air quality in your home can be affected by many factors and can result in serious health and safety risks. Although you might not see it, air pollutants are all over. They range from fumes gotten from cleaning products to dangerous molds. The higher the concentration of indoor air contaminants, the higher the risk to our health. Air pollutants can arise from harmful gases – the two most prevalent gases being carbon monoxide and radon. They can also arise from molds and mildews growing in certain areas in your home like your furniture, wet carpets, enclosed in your cooling and heating system, and around building materials.

Why you should test your Air?

The air quality in your home plays a large role in providing the desired comfort home provides. Moreover, having a home with quality air plays a major role in maintaining good health in your home. One reason you should test the air in your home (apart from the reasons for comfort and maintenance of good health) is that some pollutants have long-term effects on your health.

Some other reasons for testing the air in your home include:

Odorless gases

One reason to test the air is because of the presence of odorless gases that can be harmful to your health and the health of your family. Top on this list is carbon monoxide, which is a dangerous odorless gas that is produced when there is incomplete combustion of fuel. Initial symptoms include excessive tiredness, dizziness, and headaches. Prolonged exposure to carbon monoxide can even lead to death. Doing a proper air quality test can help in identifying the levels of these gases and ascertain if they are above the average levels in the home. You can as well install a carbon monoxide detector to help identify the levels of carbon monoxide in your home.

Volatile Organic Compounds (VOCs)

The second reason you should do an Air quality test is because of the presence of Volatile Organic Compounds emitted from paint products, building materials, and aerosol cans. VOCs are mainly found inside the home and contribute largely to the pollution of the air. Symptoms of VOCs being present in the home could include frequent irritation of the eyes, nose, and throat.

Presence of Radon

The third reason for doing a quality test for the air in your home is because of the harm that Radon can cause. The danger of Radon gas lies in the fact that it cannot be seen, smelt, or tasted. Also, research has shown that radon is among the leading causes of lung cancer in the U.S. Radon can be indoors as well as outdoors, but exposure is more within the home. Radon is mainly obtained from the breakdown of uranium in the soil, which is then moved up into the atmosphere from the ground. Buildings take these gases by trapping them within their structure and eventually become a risk for homeowners. You should test for the levels of radon whenever you are buying a home to ensure the levels are not above the average.

Asthma and Allergies

The next reason you should perform an air quality test can be because a member of your family or even you might be suffering from an allergy or asthma. In this case, an air quality test is very important to help you identify the levels of pollution and find a way to remedy it. These pollutants, allergens, and irritants have an immense effect on asthma attacks.

Physical contaminants include particulate matter like dust, smoke, and pollen. These contaminants can cause allergic reactions and respiratory issues. An air quality test will identify the presence and concentration of these contaminants, aiding in their reduction or elimination.

Exposure to unknown and unseen harmful materials

Last on our list of reasons to do an air quality test is because there are certain pollutants you might not know about and can be present in the home. Examples are airborne mold and formaldehyde, which cannot be seen but are present in the air. Exposure to these materials can cause serious health issues like cancer, lung disease, long-term illnesses, and other health complications. Therefore it is advisable always to carry out an Air Quality test in your home to identify these materials and take steps to remove them from your home.


Types of Air Quality Testing

Although major air quality tests are built around VOCs, carbon monoxide, and formaldehyde testing, there are four major types of air quality testing.

Chemical Testing

As the name implies, this involves the testing for chemicals, especially Volatile Organic Compounds (VOCs). This can be done using a photo-ionizing detector, EPA TO-15 mass-spectrometer, Sorbent tubes, summa canisters, or Tedlar bags. Common chemicals tested for include:

  1. Formaldehyde
  2. Benzene
  3. Acetaldehyde
  4. Freon
  5. Xylene
  6. Acetone
  7. Methylene; and other chemicals

Gas Testing

It involves testing for the gas levels of certain gases (majorly Carbon Dioxide, Carbon monoxide, and radon).

Gases to test for include:

  1. Carbon Dioxide
  2. Carbon Monoxide
  3. Radon
  4. Hydrogen sulfide
  5. Nitrogen dioxide
  6. Petroleum gases
  7. Combustible gases
  8. Ozone
  9. Chlorine
  10. Ammonia
  11. Sulfur Dioxide
  12. Phosphine

Biological Testing

For biological testing, 4 major categories of biological materials are tested for:

  1. Molds: including testing for mold spores and bulk mold testing
  2. Sewage bacteria: this includes Coliform, E.coli, and Enterococcus
  3. Legionella
  4. Allergens: include pollen, dust mites, skin cells, pet dander, and rodent dander.

Particulate Testing

Testing for particles is also a part of air quality testing. This involves laser particle counting, soot analysis, dust analysis, silica levels, and filtration evaluation.

How to Improve Indoor Air Quality?

Once you’ve conducted an air quality test and interpreted the results, the next step is to improve your indoor air quality.

Limiting the Use of Chemical Products

Many household and office products, including cleaners, paints, and adhesives, can release harmful chemicals into the air. Opt for natural, non-toxic products whenever possible, and ensure that rooms are well-ventilated when these products must be used.

Regular Maintenance of HVAC Systems

Heating, Ventilation, and Air Conditioning (HVAC) systems can contribute significantly to indoor air quality. Regular maintenance, including cleaning and replacing filters, can ensure these systems do not harbor or circulate contaminants.

Incorporating Indoor Plants

Certain indoor plants can help improve air quality by absorbing toxins and producing oxygen. Spider plants, snake plants, and peace lilies are all known for their air-purifying properties. However, be mindful not to overwater the plants, as this can lead to mold growth.

Avoiding Indoor Smoking

Tobacco smoke can drastically reduce indoor air quality and pose serious health risks. It contains thousands of harmful chemicals, many of which are known carcinogens. Avoid smoking indoors to maintain good air quality.

Testing for Radon

Radon is a colorless, odorless, radioactive gas that can accumulate in homes and buildings, especially on basements and ground floors. Long-term exposure to high levels of radon can lead to lung cancer. Testing for radon is an important part of ensuring healthy indoor air quality.


  • Improving indoor air quality requires a multifaceted approach. By combining regular cleaning, proper ventilation, humidity control, and mindful practices regarding chemical use and smoking, you can create a healthier and safer indoor environment. Regular air quality testing can help you monitor your progress and make any necessary adjustments.


Having a healthy home is important for you and your family. Taking the right steps to do an air quality test is a giant step in the right direction. Next, get a professional to evaluate your home or get the necessary tools to help you test the air quality in your home.

Want To Read Again?

You Might Also Be Interested In...

Having Water Damage Or Mold?