Air purifiers (air purifiers / kuuki seijyou ki) improve the air quality in your home or office by filtering out pollutants like dust, smoke, pet dander, and pollen. Some air purifiers in Japan also double as humidifiers (加湿器/かしつき/kashitsuki).

With Spring underway, you may be searching for an air purifier. This is true especially if you suffer from hay fever (kafunshou / hay fever / kafunsho) or have other allergies (allergies / allergies / areerugi-).

Use this guide to learn how to master the controls of your air purifier and for tips on how to maximize its efficiency.

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Guide To Japanese Air Purifiers

If you have just moved to Japan, check our our Japan relocation tips for families. Free resources on Best Living Japan!

Master The Air Purifier Controls

This infographic displays the controls for an air purifier that is also a humidifier. Controls on air purifiers vary by brand and model. Please use this infographic for reference only.

*** Guide to Japanese Air Purifiers ***


Choose an air purifier based on the size of the room where it will primarily be used. This will typically be denoted in tatami mat (畳/じょう/jyou) size (e.g. 6 畳, 14畳).

Put your air purifier in a large room to maximize efficiency.

Place your air purifier near a doorway. The coming and going of people with cause dust on the floor to rise up and into the filter.

Use with a fan or air conditioner to calculate dust particles in the direction of the air purifier.

Stop viruses and pollen by putting an air purifier in your home’s entrance way or genkan (玄関/げんかん).

To rid your home of cigarette smoke, put a small air purifier on your table or counter.

Clean and change filters regularly, just as you would with an air conditioner.

If your air purifier is also a humidifier, fill the water tank regularly.

Leave your air purifier on all day for best usage. This will cost around 200 yen a month, or more.

*** Guide to Japanese Air Purifiers ***

Top Selling Air Purifiers in Japan

If the choice of air purifiers in Japan is overwhelming, here’s a look at three top-selling machines. Remember to refer to our shopping in Japan article to make sure you get the best deals. And, if you love collecting points, make sure you read our guide to points and point cards in Japan before you spend some major yen on an air purifier.

Guide To Japanese Air PurifiersFor an air purifier without all the bells and whistles, you can’t go wrong with this motion activated. space-saving air purifier by Iris Ohyama. This tower air purifier comes with a HEPA filter.

Iris Ohyama Pollen Air Purifier – Available on Amazon Japan – 4,900 yen

Guide To Japanese Air PurifiersWatch enough Japanese TV and you’re bound to see this one on an infomercial. This air purifier removes large particles like pollen and microscopic particles such as PM 2.5. Use it as a humidifier and its four different settings (pollen, high temperature, dryness, and rainy season) help you comfortably deal with the change of seasons in Japan.

Sharp Plasmacluster – Available on Amazon Japan – 19,800 yen

Guide To Japanese Air PurifiersUsing Panasonic’s Nanoe technology also removes house dust through a floor-level vent. This model from Panasonic does not function as a humidifier. However, its special sensors are designed to react to specific irritants. It detects cigarette smoke, body odor, and the smell of household rubbish.

Panasonic Nanoe Air Purifier –  Available on Amazon Japan – Black 30,800 Or White 29,485

Guide To Japanese Air Purifiers

Please see our top-rated posts on surviving spring and the rainy season in Japan:

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Guide To Japanese Air Purifiers


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