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Indoor Air Quality Guide: A Practical Home Framework

Start with pollutant sources and ventilation, then use filtration as a supplement. This hub connects the core indoor-air-quality decisions.

Updated September 2026•Research-based editorial

Start with the indoor-air problem

EPA’s basic hierarchy is useful: reduce or remove pollution sources, ventilate with clean outdoor air, then use filtration as a supplement where appropriate.

Source control first

No air cleaner can remove every pollutant. Fixing the source—smoke, moisture, emissions, dust entry or another cause—often provides more leverage than adding another device.

Then choose the right filtration tool

For particles, use room sizing and particle-cleaning performance. For gases, look for a dedicated gas-removal stage. Portable units and HVAC filtration can complement each other, but their run time and coverage are different.

Useful next steps

From here, learn how CADR works, size a portable purifier, or compare Molekule’s current approach with conventional systems.

Research basis: Product specifications and current lineup details were checked against Molekule’s official product/help materials. General air-cleaner guidance follows the U.S. EPA Guide to Air Cleaners in the Home. Where independent-review observations are mentioned, they are attributed in the text. Airwise Atlas does not claim hands-on testing unless explicitly stated.