“Most residences and commercial and public buildings have significant mold growth inside their heating, ventilating, and air conditioning (HVAC) equipment and ducts,” according to Phillip Fry, EnviroFry co-manager, Certified Environmental Hygienist, Professional Industrial Hygienist, Certified Mold Inspector, Certified Mold Remediator, and Certified Air Duct Cleaning Specialist.
Fry recommends this five step mold removal protocol.
Step one, have an environmental hygienist take an air sample of the outward air flow from one or more HVAC air supply ducts, plus an outdoor control air sample (for comparison purposes) and then send the air samples to a mold analysis lab for mold species identification and quantification (count number of mold spores of each species).
In addition or alternatively, the entire lengths of the HVAC ducts can be internally examined with a long-cabled fiber optics video camera connected to a television display screen.
This initial testing and/or video camera inspection can determine whether or not the HVAC system needs mold cleaning and decontamination and also establish a base against which to compare mold levels after the HVAC treatment.
Step two, if mold testing documents a toxic mold problem in the HVAC, kill the mold spores and mold growth by using a high output ozone generator to inject ozone gas for eight hours into the return air duct of the HVAC system while it is operating on fan ventilation, and not the cooling or heating function. Ozone benefits, use directions, and high output ozone generators for sale are available at www.ozonegeneratorkillsmold.com.
There can be no people, pets, or live plants in the residence or building during the ozone treatment. Because ozone gas will be coming out of the HVAC air duct registers, this treatment will also help to kill mold throughout the building.
Step three, do air duct cleaning with an experienced duct cleaning company to remove HVAC mold growth, bacterial growth, and accumulated dust and dirt, both of which can be food for mold to eat and multiply with. For duct cleaning information, visit www.moldexpertconsultants.com.
Step four, use a professional fogging machine to fog an EPA-registered fungicide and surface encapsulation product (approved for use in HVAC systems) into both the return air duct and air supply registers to kill and encapsulate (coat with a protective layer) any remaining mold spores and mold colony growth. For fogging machine information, visit www.moldfoggingmachine.com.
Step five, have an environmental hygienist re-test the outward air flow from one or more HVAC air supply ducts to determine whether the HVAC mold level is now safe for building occupants.
For more information on the cleaning and decontamination of HVAC equipment, ducts, and window or wall air conditioners, email mold consultant Phillip Fry email@example.com, phone Phillip toll-free 1-866-300-1616 or cell phone 1-480-310-7970, or visit the mold information website www.airconditionermold.com.