Is it Allergies or Mold?

Mold on insulation

Understanding What Mold Is

Mold, a type of fungus, thrives in damp or decaying organic matter and cellulose materials. It can grow both indoors and outdoors. While mold itself is not inherently toxic, certain types can produce spores or cell fragments that release toxins, inflammatory substances, and allergens. Exposure to mold spores triggers immune responses, leading to allergy symptoms such as watery eyes, scratchy throat, runny nose, sinus headaches, etc. 


Mold Allergy Symptoms

The symptoms of mold allergies vary based on individual immune responses. Common types of mold associated with allergies include:

  • Alternaria
  • Aspergillus
  • Basidiospores
  • Cladosporium
  • Penicillium

When mold spores enter the nose or throat, they can cause allergy symptoms like sneezing, itchy eyes, and a runny nose. For some individuals, mold can also trigger asthma symptoms, including shortness of breath and chest tightness. 

Causes of Mold Allergy

Indoor mold typically thrives when there is a heat and humidity imbalance. As mold spores travel through the air, they form new colonies, increasing indoor mold coverage. The spread of those mold spores is aided by our air handlers. Just think of it. The AC systems in Florida are made of fiberglass. There is hot and cold air exchanged in there. There is humidity. It is a perfect environment for mold growth!


Although mold spores are present everywhere, they flourish when environmental conditions are not maintained (<76º and less than 60% relative humidity) or when a water event happens. Mold growth can easily happen, especially when organic matter provides a suitable surface for growth.


Mold in HVAC

Treatment and Prevention

Minimizing exposure to mold is crucial for managing symptoms. Here are some steps to consider:

  1. Reduce Dampness: Address any sources of excess moisture in your home. A dehumidifier should be the most important appliance in your home!
  2. Ventilation: Ensure proper ventilation in damp areas. IE, bathrooms are properly exhausted, air handler is running efficiently, ceiling fans always stay on, etc.
  3. Maintain Your AC’s Filters: There is so much mold, pollen, dust, dead skin cells, pet dander, etc in our air. Be nice to your air handler and switch your filters monthly! We recommend purchasing a MERV 8 to MERV 13. They filter down to a specific size of micron to prevent allergens from circulating in your home. Don’t go above a MERV 13, because then you can suffocate your air handler and not allow you house to breathe.
  4. Medications: Talk to your Doctor and see if adding antihistamines and nasal corticosteroids to your daily routine may help alleviate your symptoms.
  5. Consult a Specialist: Contact us today for air quality testing or your home or office. That way if your symptoms persist, you can take those results to an allergist or immunologist.

Remember, while mold allergies can be bothersome, taking proactive measures can significantly improve your quality of life.

Have you been having watery, itchy eyes? How about a scratchy throat? Or even a runny nose? It could be seasonal allergies, or it could be exposure to mold that is causing your symptoms. Please reach out to us, and we will be able to help you figure out what your best corse of action should be. We can be reached at (904) 397-4030 for North Florida, (813) 606-6668 for Central Florida, and (239) 961-9995 for South Florida.

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