Duct cleaning is often marketed as a way to improve air quality and protect your health—but does it actually make a difference? According to various studies, there's no solid evidence that routine duct cleaning prevents health issues or significantly reduces dust levels in the home. Still, some homeowners consider it for other reasons, such as peace of mind or system efficiency. So, is it necessary—or just a nice-to-have?
What Science Says About Air Ducts and Indoor Air Quality
Research from credible institutions, including the EPA, indicates that duct cleaning has not been proven to prevent health problems. In fact, most of the dust inside ductwork clings to surfaces and doesn't circulate into the living space. For most homes, routine filter replacement and proper HVAC maintenance have a far greater impact on air quality than duct cleaning alone.