If you choose to have your ducts cleaned, the air duct cleaner should:
The following text is posted here as a consumer service, courtesy of the US Department of Environmental Protection. For the full article, please click here.
From the EPA website:
“Duct cleaning has never been shown to actually prevent health problems. Neither do studies conclusively demonstrate that particle (e.g., dust) levels in homes increase because of dirty air ducts or go down after cleaning. This is because much of the dirt that may accumulate inside air ducts adheres to duct surfaces and does not necessarily enter the living space. It is important to keep in mind that dirty air ducts are only one of many possible sources of particles that are present in homes.
The EPA does not recommend that air ducts be cleaned except on an as-needed basis because of the continuing uncertainty about the benefits of duct cleaning under most circumstances.
EPA does, however, recommend that if you have a fuel burning furnace, stove, or fireplace, they be inspected for proper functioning and serviced before each heating season to protect against carbon monoxide poisoning. [Please Click here to book your annual service appointment for cleaning of a fuel burning furnace, stove, or fireplace.]
Some research also suggests that cleaning dirty cooling coils, fans and heat exchangers can improve the efficiency of heating and cooling systems.
If you think duct cleaning might be a good idea for your home, but you are not sure, talk to a professional.