Indoor allergens are airborne particles inside the home that cause allergic reactions, and they often provoke or worsen asthma symptoms. It is estimated that over 42 million Americans suffer from allergies or asthma, and indoor allergens are a serious contributor to their symptoms.

The majority of people with asthma, or allergies like hay fever, tend to think of their homes as a safe haven free from the elements that aggravate their condition. The fact is that indoor allergens are prevalent in most people’s homes. This is because homes actually trap in the allergens, and therefore they are unavoidable.

Common indoor allergens are pollen, dust, dust mites, mold, mildew, insect debris and pet dander. Pollens are the main cause of seasonal allergies, however if you experience allergy symptoms like stuffed up nose, watery or itchy eyes, sneezing, congestion, or runny nose year-round, then most likely you are experiencing non-seasonal allergic reactions caused by indoor allergens.


A few facts about indoor allergens and allergies:

  • Allergy symptoms are often aggravated in the winter because people tend to keep their windows closed, thereby trapping the allergens indoors.
  • Having windows open during high pollen and mold count seasons can worsen allergy symptoms because high concentration allergens are able to enter your home.
  • If you experience allergy symptoms due to indoor allergens, you will continue to be symptomatic as long as exposure continues.
  • Indoor allergen sensitivity is extremely common and can occur at any age.

AirAdvice indoor air quality tips:

  • The key to controlling allergies caused by indoor allergens is to reduce your level of exposure to them. Depending on your specific living environment, the solution could be adequate ventilation, filtration, source removal, or some combination of all of these.

To find an IAQ expert in your area, click on the Find an Expert button at the top of this page. They will measure the levels of indoor allergens, and provides recommendations for managing those levels. Protect your family’s health and well-being.