Duct Cleaning - Mold and other airborne allergens in heat and air ducts often originate in other parts of the home, rather than originating in the ducts themselves. The most common sources of odors are bacteria and mold.

Bacteria usually originate in damp areas or a plumbing leak, not ductwork.  Mold and mold spores do not smell.  The smell normally associated with mold is from gases given off when mold metabolizes the material it is growing on. Unless the mold is growing in the ducts themselves, cleaning the ducts will have no effect on distribution of the odors. 

Although odors can be unpleasant, allergens are more likely to affect your health.  The most common allergen is mold spores.  When mold is growing, it sends off mold spores to grow more mold, just as plants send off seeds to grow more plants.  The spores become airborne, and when inhaled, can cause distress in the respiratory system.

Spraying odor absorbing or odor masking chemicals into the ducts by duct cleaning companies can mask the odor for a short period, giving the illusion of solving the problem.  Meanwhile, you may be inhaling the same level of spores, now coated with other chemicals.

There are mold spores everywhere in the environment. Having a spore free environment is not realistic.  Odors and mold spore are more likely to originate in places other than the ducts themselves.

Air Allergen & Mold Testing can help you identify where the spores and odors are originating to assist you in fixing the problem, rather than cleaning the distribution system.

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