All of our air-duct cleaners check for filth, grime, pollen, canine pollen and also other air-borne contaminants which have been yanked into the Hvac device every time the furnace or air conditioning equipment operates. With time, they will build up with your duct work, making ones own air-duct system a breeding ground for mold spores, micro organism as well as other particular fungus, which might be then re-produced through your residence, impacting the health and convenience of ones own.