Where is the best place to put an air purifier in your home?

Author: Euna Sipes  |  Last update: Sunday, December 14, 2025

Choose a Central Location Place your air purifier in a central area of the room to allow for efficient airflow and circulation. This means you should keep your device away from walls, corners, and other obstructions (more on why in a second).

Where should air purifiers be placed?

Air purifiers work by circulating air, and they need space to do it. Air purifiers should be at least 6 inches away from walls, doors, or furniture. Running the device in tight spaces or with other items nearby reduces the amount of airflow the device can generate with its intake fan.

Is it better to put an air purifier on the floor or table?

For this reason, the equipment can stand in the living room during the day, while in the bedroom at night. Do not forget about the height of the position of the purifier. Specialists recommend placing the device on the floor, because it is near the ground that there is a higher concentration of pollutants.

What is the most important room for an air purifier?

Bedroom. The most important room to put an air purifier in is the bedroom — yours as well as the bedrooms of your children.

Is it better to have an air purifier higher or lower?

We recommend elevating it no higher than 5 feet off the ground, and this can be done by placing the air purifier on a piece of furniture, such as a dresser.

Where To Place An Air Purifier?

Is there a downside to air purifiers?

What are the downsides of air purifiers? There aren't a lot of downsides to having an air purifier in your home aside from the financial investment. Many ionizers, especially older models, can generate ozone when they are operating, which is known to exacerbate asthma.

Should an air purifier run all day?

Many people think that switching it off during the night or when they're not present is a logical energy-saving measure, but it is recommended to keep it running constantly. Once you turn off your air purifier, the air quickly becomes contaminated again with mold, dust, dander, and other pollutants present in the air.

How many air purifiers should you have in your home?

When shopping for air purifier units, take a look at how many square feet it says it can cover, then divide your home's total square footage by that number to get how many air purifiers you should get. In Minnesota, the average house size is 1,828 square feet. Divided by 700, you get 2.6.

Do air purifiers remove dust?

Air purifiers assist in eliminating household dust by helping to clean and purify the air in the home. Dyson's advanced purification machines are engineered with technology that traps dust before it settles on your furniture and floors. Dyson purifiers capture 99.95% of dust and ultrafine particles1.

How long does it take for an air purifier to work?

Under optimal conditions, most air purifiers begin showing results within 30 minutes to 2 hours.

How do I get the best results from an air purifier?

For optimum airflow and efficiency, place the air purifier in an open area, three feet of the ground, at least a few feet away from walls and objects. Operate the purifier in rooms most used by people. It is safe to move the purifier between different rooms as you move during the day.

Should you put air purifier near bed?

Ideally, you want your air purifier to be close to where you're breathing, for the shortest journey between our dual HyperCaptive air filtration system and lungfuls of clean air. Noise won't be an issue.

How often should I clean my air purifier?

Pre-filters should be gently vacuumed every 1–3 months. Many air purifiers have a pre-filter that captures larger particles like hair and dander before they reach the main filter, protecting your main or carbon filter so it doesn't clog up as quickly. Clean pre-filters frequently, about every 1–3 months.

Is it better to have two small air purifiers or one big one?

Air circulation: If your room has poor air circulation, or is a complex shape (such as an L shape or a long thin shape) then you may benefit from multiple smaller air purifiers to improve ventilation. Two air purifiers placed at different locations in your room may help improve air circulation.

Do air purifiers help with mold?

Mold is an obvious health risk in any home, but investing in an air purifier can help limit your exposure. The best among them will ideally offer HEPA-level filtration, with this level of filtration being able to trap up to 99.97% of airborne particles down to 0.3 microns in diameter.

How to know if an air purifier is working?

First, check the system's airflow. A working air purifier features clear, consistent airflow. If the purifier is not blowing out air (easily determined by placing your hand in front of the system), there's likely a problem. If you are unable to hear anything, that's also a sign the purifier isn't working.

Do air purifiers use a lot of electricity?

Room air cleaners are portable, electric appliances that remove fine particles, such as dust and pollen, from indoor air. A standard room air cleaner, operating continuously, uses approximately 450 kWh per year in electricity. This is more than the energy used by some new refrigerators!

Why is my house so dusty even with air purifier?

If you notice a lot of dust in your house, it's likely due to a combination of factors affecting air quality and ventilation. Dust particles from outside can enter through open windows or doors, while indoor sources like pet dander, dead skin cells, and fibers from textiles contribute to the buildup.

Are home air purifiers worth it?

A whole-house air purifier is undoubtedly worth the money for those with allergies, asthma, and other respiratory conditions. The system helps reduce symptoms by removing antagonistic air pollutants. This results in less frequent and intense allergy and/or asthma attacks.

Where to position an air purifier?

Place your air purifier in a central area of the room to allow for efficient airflow and circulation. This means you should keep your device away from walls, corners, and other obstructions (more on why in a second).

What kind of air purifier is best?

Our Top Picks for the Best Air Purifiers:
  • Best Overall Air Purifier: Coway Airmega True HEPA Purifier, $225.
  • Best Runner-Up Air Purifier: Coway Airmega 250 Smart Air Purifier, $319 $290.
  • Most Versatile Air Purifier: Dyson Purifier Humidify+Cool Formaldehyde, $806.

Are in-duct air purifiers worth it?

Yes. In-duct air purifiers work with your HVAC system to filter out dust, allergens, bacteria, and more. They also help keep your system running efficiently.

Should I turn off my air purifier when I leave the house?

By leaving the purifier on while you're away, you maintain clean air throughout the day, ensuring you return to a fresh and healthier environment. This is particularly important for those who suffer from allergies, asthma, or other respiratory conditions.

How long does it take to see the effects of an air purifier?

In a typical home environment, an effective air purifier can start to reduce these pollutants within 30 to 60 minutes. Noticeable improvements in air quality are often observed within a few hours, with significant reductions occurring over 24 hours of continuous use.

Is it expensive to run an air purifier all night?

The energy cost of running an air purifier continuously is surprisingly low. Even a powerful whole house air purifier that covers up to 4,000 sq. ft. can cost just $0.27 a day, and that's when run continuously on the highest setting.

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