Where to Put an Air Purifier

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Updated February 4, 2023

If you are thinking of buying the highly recommended air purifier for your home, you may have one thing on your mind. Where to put an air purifier? Homes are rather large, after all. Although you may think a doorway is a great place, that actually might do your device a disservice. Instead, opt for a setting on a table that will provide good circulation and ventilation for the device. You’ll want ample feet of space, so the air intake can work effectively. If you have tight spaces for living, this might be another problem. Although, depending on the air purifier model you choose, you can find a smaller one that’s just as powerful and will fit in smaller spaces easily. That’s why you’ll need to get the right size air purifier for your home.


  • Place an air purifier away from obstructions, such as walls and obstacles.
  • Air purifiers do not do well in tight corners, as the airflow will become restricted.
  • Try to place an air purifier three to five feet from the ground to maximize efficiency.

Air Purifier Location Impact

Before you understand where to put an air purifier, it will help to understand how location impacts the efficacy of a purification device. Most air purifiers work by drawing air from the room into the purifier, where it is run through a filtration device. After that, the purified air is released back into the room. If you find out that it is not working well, consider where to sell air purifiers.

Where to Place an Air Purifier

An air purifier might clean more than one room, provided you bought the right size. If the size is incorrect, you can bet that the mold, dust, and pollutants will collect. It’ll be harder to breathe at night, and the overall air flow to the unit will diminish faster. Not to mention that the filter will need to be replaced more frequently. 

With this information in mind, you can figure out where to place your air purifier. Here are some additional tips and guidelines to follow.

Avoid Walls and Objects

Filter-based air purifiers work best when they are placed away from large obstructions, such as walls and objects. They need ready access to the airflow of the room, and obstacles will get in the way of that access. The exact measurements will vary depending on the make and model of your air purifier, but try to keep them at least six inches away from a wall or obstacle. This means that you should not place an air purifier in a corner.

Why? Because indoor air quality will suffer, the air purifier performance won’t work either. It’s a good chance it’ll miss mold spores, smoke particles, and many other airborne pollutants. 

Place Near Areas of High Airflow

Modern air purifiers are extraordinarily efficient, so you should not worry about them becoming overwhelmed by the airflow in your home. As a matter of fact, air purifiers work best near high areas of airflow. In other words, place your air purifier near windows, fans, and other parts of the home that experience high air traffic. Placing an air purifier near a home’s entry point can act as the first line of defense as potentially harmful airborne particles come in with visitors.

Insider Tip

Most air purifiers work by drawing air from the room into the purifier, where it is run through a filtration device.

Place it High

Air purifiers can be placed on the ground, but they truly excel when placed on a counter or shelf three to five feet off the ground. This will allow the purifier to capture air moving horizontally and hotter-than-average air moving vertically. For bedrooms, place an air purifier on a window sill or a nightstand. In office environments, feel free to place one right on top of the desk. Remember, you should not place it too far so that it becomes problematic when cleaning the electrostatic air purifier. And, if you have another filter type, then change the HEPA filter in your air purifier.


Do HEPA air purifiers filter out the COVID-19 virus?

HEPA filters will capture and trap a fair amount of the COVID-19 virus, but may not filter out all of it. This is because coronavirus particles tend to be smaller than 0.3 microns in diameter.

Where is optimal air purifier placement?

There is no optimal place to put an air purifier, as each purifier and each home is different. Just do your best to follow the guidelines mentioned above, and you will be fine. Feel free to experiment.

How often should you change the filter in your air purifier?

HEPA filters should be disposed of and replaced every six months to one year, depending on usage. Electrostatic and activated carbon filters do not have to be changed but should be cleaned every month.

STAT: Generally, you can increase the efficiency of the air purifier by up to 20% if you correctly place it. (source)

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