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

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

   Cunniffe summarizes that according to the US Environmental Protection Agency (EPA), you should only clean your air ducts on an as-needed basis because experts often debate the perceived benefits ...

3. Is your heater making you sick? How to avoid cold-like ...

   www.aol.com/lifestyle/heater-making-sick-avoid...

   The rating, developed by the American Society of Heating, Refrigerating and Air Conditioning Engineers, reports a filter’s ability to capture larger participles between 0.3 and 10 microns.

4. How Often You Should Change Your Air Filter—And What ... - AOL

   www.aol.com/often-change-air-filter-happens...

   “How often you replace your air filter will depend on filter type, usage, and environmental factors," Goddard advises. "To be on the safe side, plan on changing a standard 1-inch filter at least ...

5. Kitchen exhaust cleaning - Wikipedia

   en.wikipedia.org/wiki/Kitchen_exhaust_cleaning

   Kitchen exhaust cleaning (often referred to as hood cleaning) is the process of removing grease that has accumulated inside the ducts, hoods, fans and vents of exhaust systems of commercial kitchens. Left uncleaned, kitchen exhaust systems eventually accumulate enough grease to become a fire hazard.

6. Heating, ventilation, and air conditioning - Wikipedia

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

   Clean air delivery rate (CADR) is the amount of clean air an air cleaner provides to a room or space. When determining CADR, the amount of airflow in a space is taken into account. For example, an air cleaner with a flow rate of 30 cubic metres (1,000 cu ft) per minute and an efficiency of 50% has a CADR of 15 cubic metres (500 cu ft) per minute.

7. Radon mitigation - Wikipedia

   en.wikipedia.org/wiki/Radon_mitigation

   Above slab air pressure differential barrier technology (ASAPDB) requires that the interior pressure envelope, most often drywall, as well as all ductwork for air conditioning systems, be made as airtight as possible. A small blower, often no more than 15 cubic feet per minute (0.7 L/s) may then extract the radon-laden air from these cavities ...