The Best Place To Position Your Air Purifier

Best Place To Put Air Purifier in Room

Where should I place my air purifier? It’s a common question every air purifier owner has. Where to position an air purifier can be a difficult decision. How does position affects its performance? Is it best to put an air purifier next to a wall? This post answers the question on how to best place your air purifier—based on data, not intuition.

Best Position for an Air Purifier – Distance From Wall

For purifiers to work best, they need room to take in the air and push it out to the room. If it’s backed up against the wall, it can’t take in as much air.

Air Purifier Against Wall


So how far from the wall the purifier should be? I decided to put our purifiers to the test. Here’s how:

I ran the test on three Smart Air purifiers. The BlastBlast Mini, and Cannon. Averaged out over the 3 air purifiers, here’s the data:

When the purifier was flat against the wall, the airflow was only about 5%! Moving the air purifier 4cm from the wall increased the airflow from 5% to 94%. At 10cm from the wall, airflow was back up to 100% it’s normal value.

Keep Your Purifier an iPhone’s Length from the Wall

Since not all air purifiers have exactly the same inlet, a safe bet would be to keep your air purifier inlet at least 15cm from the wall. 15cm (or just under 6 inches) is the same as the height of an iPhone 11. You can use it (or a similar phone) to make sure your purifier is best placed away from a wall.

keep air purifier at least 15cm or 6 inches from wall - height of iPhone 11

Bottom Line: Where is the Best Place to Put an Air Purifier

For maximum performance, it’s best to place your purifier at least 15cm (or 6 inches) away from a wall.


Learn more: follow these 4 pro tips to make best use of your air purifier »

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