Studies reveal that indoor air may be 70 times more polluted than the air outside.
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- By S. Steijn
- Posted in duct cleaning, HVAC maintenance, Indoor air quality
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According to the National Air Duct Cleaners Association an average home collects as much as 40 pounds of dust, dirt and allergens in a year. This is alarming given that this dirt contains about 40,000 dust mites and hosts unhealthy bacteria, mold and fungi.