Where To Place An Air Purifier? (The Ultimate Guide)

Air purifier placement is an art. No, we are not exaggerating. Many people have no idea where to place an air purifier that resulted in the filtration performance hampered up to 90%. So why does the majority of the people made the same mistake when choosing a spot? More importantly, how do you choose the ideal location for an air purifier? Follow this simple guideline and we guaranteed you will get the best out of it.
Short answer
Place it close to the pollution sources.


1. Place It Close To The Air Pollution’s Sources

The closer an air purifier is placed to the pollution sources, the faster it can capture the harmful particles and improve the air quality. For example, if your concern is pet odor, place it next to the litter box or where your pet sleep. If your concern is tobacco smoke, place it near to the smokers or where tobacco smoke is seeping in. If your concern is musty mold smell, place it close to the mold-infested area. To find out which room has the highest concentration level of air pollutants, an air quality monitor can accurately indicate which place fares the worse. Otherwise, you can rely on your natural eyes and nose senses to make your own judgment.

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2. Avoid Placing The Air Purifier In The Corner

Leave at least 2-4 feet of space between a wall rather than putting an air purifier in the corner to avoid airflow disruption. When you leave it in the corner, the air ventilation will be impeded from pulling dirty air in and releasing clean air out. A common mistake as many people will instinctively leave an air purifier in the corner to prevent the device from becoming a tripping hazard.

3. Put It Near The Doorway (Bedroom, Playroom, Study Room)

Placing an air purifier near the doorway will stop harmful airborne pollutants from entering the room. By leaving the air purifier at the entry point, it will keep the room air clean while protect you from inhaling external irritants during sleep or work. Very effective when you have domestic pets like cats or dogs that come in and out while carrying unwanted particles.

4. Do Not Place The Air Purifier In a Tight Spot

An air purifier works best when placed in an open area as it can draw airborne particulates from all directions with optimal airflow distribution. Avoid tight spaces like underneath a shelf, inside a closet, or behind furniture e.g. sofa that will obstruct the air intake and outtake. Again, the rule of thumb is to leave 2 to 4 feet of space when choosing a spot for the air purifier.

5. Put Small Air Purifier 3 To 5 Feet Off The Ground

Portable/ Compact air purifiers are designed to be space-saving and placed high for better horizontal and vertical indoor air movement coverage or floor-to-ceiling cleaning efficiency. You can put an air purifier on top of a table, shelf, cabinet, and even mount it to a wall as long as it is not elevated higher than 5 feet off the ground.

6. Place a Console Air Purifier On The Ground

A full-sized/ console air purifier is designed to be placed on the floor to capture pollutants lower on the ground and distribute clean air at the top. Due to its bulkiness and weight, it is not possible to place it on higher ground. Also, you should not place an air purifier on a carpet or uneven surface to avoid the risk of the machine tipping over.

7. Keep a Safe Distance From Electronic Devices

An air purifier will not function well when it is placed next to home appliances like an oven, microwave, and television. Doing so might cause interference as the electronic appliances could be operating in similar wavelengths. Ideally, you should leave 2-4 feet of distance between an air purifier and any electronic appliances.

8. Avoid Placing It In a Wet Area

An air purifier will not work well in a high humidity area such as a toilet or steamy bathroom. Excess moisture in the air will be absorbed by the filter thus shorten the filter life capacity. The air purifier also requires more airflow and energy to deal with heavier, humid air. Place a dehumidifier in the same room as an air purifier instead to decrease the relative humidity level between 30 to 50 percent. If you are running a standalone humidifier at the same time, keep them separated by placing it on the opposite side of the room.

9. Do Not Place The Air Purifier Underneath a Window

The sunlight heat will damage the air purifier when you put it directly underneath the windows for an extended period of time. Keep all windows and doors shut whenever an air purifier is put in place. It will stop clean air from escaping and dirty airborne particles like pollen, dust, germs, carbon monoxide from flowing in. Doing so will also prevent the air cleaner from overstressing as the workload will be limited to the air circulation in the room.

10. Put It In More Than One Place

Some air purifiers are portable and lightweight enough that you can move it from room to room for extensive purifying. During the daytime, you can place an air purifier in the living room while you watch television, work, or spend time with your kids, and put it in the bedroom during nighttime. If you have air quality concerns in a different location all at the same time, you will need more than one air purifier. There is no one-size-fits-all.

11. Consider The Room Size Before Placement

Above all else, you will need to consider the air purifier’s airflow capacity before placing it in a room. For example, if your air purifier can only cover up to 200 square feet of room space, you should only put it in a room of no more than 200 square feet. Most manufacturers will recommend the room size an air purifier should be placed on, you can also use the clean air delivery rate (CADR) numbers to determine the usability with at least two-thirds of the room size. CADR is a measurement that indicates how much air has been filtered in Cubic Feet Per Minute (CFM). The higher the CADR numbers, the faster the air purifier can clean the air.

Where's The Best Place To Put Air Purifier?

The best place for an air purifier would be in a bedroom as we spend 1/3 of our time sleeping. For those with babies or children sleeping in another room, it makes sense to put the air purifier there as well due to their developing immune system. Basement, garage is also another popular spot due to the poor ventilation and high dust buildup. Lastly, if you spend more time in a living room, by all means, place the air cleaner there.

Final Thoughts

High or low, there are other factors that would impact the airflow performance other than the air purifier placement. First, keep your air purifier and filters clean. If the filter is clogged with dust, damaged, or worn out, it will not work. Second, make sure there is enough airflow juice to cover an entire room. When the airflow is too weak to distribute clean air, certain sections of the room will be left out and you will be at risk of inhaling the irritants. You can use our simple room size calculation formula here. Lastly, only consider a HEPA air purifier as it is the safest and the most comprehensive type.

Max Fernandez

A loving father and a dedicated reviewer for airfuji.com with more than 1000 air purifiers under his belt. Max Fernandez is also one of the million patients currently suffering from asthma. Feel free to nudge him if you have any questions.