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Where to Place a Portable Air Cleaner Without Blocking Airflow

Placement matters: use a portable air cleaner in rooms where you spend time, keeping its intake and outlet free of curtains and furniture.

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US Environmental Protection Agency

EPA guide: Air cleaner placement

Text-only link card to EPA guidance on air-cleaner placement

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The US EPA recommends locating portable air cleaners in frequently occupied rooms with unobstructed airflow. No unit removes all pollutants, so ventilation and source control still matter.

Your try-it-at-home checklist

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Choose the room where people spend the most time; check the unit's recommended room size and setup instructions.
Identify air inlets and outlets and follow the manufacturer's required clearance from walls or furniture; do not invent a universal distance.
Avoid curtains, closets, shelves and tight gaps that obstruct flow. Confirm whether the model permits floor, carpet or tabletop placement.
Place the unit on a suitable stable surface away from walkways, with its cord protected from trips or crushing.
If the draft is uncomfortable, redirect the airflow rather than aiming the outlet toward people's faces.
Check and replace filters as the manual directs. Address sources of smoke, odors or dampness rather than relying on a purifier alone.

EPA guide: Air cleaner placement

Your try-it-at-home checklist

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