Most Common Causes of Poor Indoor Air Quality

When it comes to indoor air quality, it is vitally important for your health and the health of your family and pets to ensure that you have proper ventilation, and yet the majority of homes fall short.  Although many consider it to be counter-intuitive, several scientific studies have found that indoor air quality can be much more polluted than the air outside, even in the largest and most polluted cities in the World.  Further, in today’s digitally connected world, most people are spending a large percentage of time indoors, and unfortunately, these people are increasing their risk of health issues, if they don’t ensure they have proper ventilation.

So today, I have decided to lay out a few of the most common causes of poor indoor air quality, so our readers can have a better idea of what to watch out for. Some of these may be obvious, while others may be less obvious. If you know of any other indoor air pollutants to add, leave us a comment below! So let’s jump right into it!

  1. Improper Ventilation- A lack of proper ventilation in your home is probably the number one cause of poor air quality. This can be caused by old ventilation systems never being updated, or simply poor upkeep of your current HVAC system. The best way to defend against this is to hire your local HVAC supplier to inspect and certify that you have proper ventilation in your home. we choose Arundel Cooling in Columbia, MD for all our indoor air quality checks.
  2. Mold and Mildew Growth- Mold and mildew can lead to serious health problems like asthma and severe allergies. Most typically grow in damp and dark conditions, so the best thing you can do is ensure that there are no damp and dark conditions for these contaminants to grow.
  3. Pollutants from Cleaning Products- Cleaning is very important to maintaining a healthy home, but many contain harmful chemicals. Even products advertised as “green” can contain these harmful chemicals. According to, many cleaning supplies can contribute to chronic respiratory problems, allergic reactions and severe headaches.  To protect against this, be sure to read all labels before you buy, and look for products that do not contain VOC’s, fragrances, flammable ingredients or other irritants.
  4. Pollutants from Smoke- I probably don’t have to tell you the dangers of second-hand smoke from cigarettes, but the less obvious cause for concern is smoke from your fireplace. It is vitally important to prevent the build-up of smoke in your chimney, as this has been linked to increased chance of lung cancer. If you have excess build-up in your chimney and flue, be sure to have it properly cleaned by your local expert.

So, remember these 4 indoor air common pollutants and what you can do to prevent them, and you will be well on your way to improving the air quality for your family, pets and all those who enter your home.