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2. How Often Should You Clean Your Air Ducts? Experts Explain - AOL

   www.aol.com/often-clean-air-ducts-experts...

   Cleaning air ducts every three to five years is important to ensure the system is running at capacity and can reduce dust and mold in the home. According to Fourner, benefits of cleaning air ducts ...

3. No, You Don't Need to Clean Your Air Ducts Every Year ... - AOL

   www.aol.com/no-dont-clean-air-ducts-110500245.html

   "An inspection can help determine if air ducts need cleaning by checking for visible dust buildup, mold growth, or signs of pest infestations, offering a clear indication of when professional ...

4. Is Your HVAC System Making Your Home More Dusty? - AOL

   www.aol.com/lifestyle/hvac-system-making-home...

   "Professional duct cleaning lets technicians reach deep into your ductwork with special vacuums and spray gentle disinfectants that can help keep your ducts cleaner for months to come."

5. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   Air-side economizers also use outside air to condition spaces, but do so using fans, ducts, dampers, and control systems to introduce and distribute cool outdoor air when appropriate. An important component of natural ventilation is air change rate or air changes per hour : the hourly rate of ventilation divided by the volume of the space.

6. Kitchen ventilation - Wikipedia

   en.wikipedia.org/wiki/Kitchen_ventilation

   Provide sufficient air for complete combustion at fired appliances, and prevent the risk of carbon monoxide accumulation. Be easy to clean (intermittent e.g., manually, or continuously e.g. using ozone) so that fat residues do not accumulate in the hood and ducts and block air inlets, leading to loss of efficiency and increasing fire risk.

7. Indoor air quality - Wikipedia

   en.wikipedia.org/wiki/Indoor_air_quality

   Portable room air cleaners with HEPA filters can be used if ventilation is poor or outside air has high level of PM 2.5. [122] Air filters are used to reduce the amount of dust that reaches the wet coils. [citation needed] Dust can serve as food to grow molds on the wet coils and ducts and can reduce the efficiency of the coils. [citation needed]