What MERV rating filter is recommended for significantly reducing the internal PM exposure load at home?
Answer
A MERV 13 filter or better
While air quality indices warn about outdoor pollution, proactive measures can be taken indoors to manage personal exposure, especially when pollution levels peak. A key recommendation provided for mitigating the internal exposure load involves upgrading home air filtration systems. Specifically, ensuring that the home's HVAC system utilizes a filter rated at MERV 13 or a higher classification is advised. This level of filtration is necessary to effectively capture the finer particles, like PM2.5, that manage to infiltrate indoor environments, thereby significantly reducing the concentration of these harmful particulates that occupants breathe internally.
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