How Your Heating and Cooling System Got Dirty

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Uploaded by on Mar 24, 2010

Learn why ductwork gets dirty and how to check your own system. Through normal occupation in a home/workplace we generate a great deal of contaminants and air pollutants (dander, dust, allergens, chemicals) which is pulled into the HVAC system and re-circulated 5-7 times a day on average; result there is a natural build-up of contaminants within the duct work over time. All these containments can cause an inefficient system and poor indoor air quality. No matter what type of ductwork is being cleaned, a NADCA-certified contractor will know what equipment to use to clean in accordance with NADCA standards.

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