Daikin's Streamer Technology revolutionizes air purification.

This website provides information on the results of demonstration experiments conducted with various research institutions.

Patented Streamer Discharge Technology

What is the Streamer technology?

The Streamer technology developed by Daikin Industries is an epoch-making air purification technology that has succeeded in stably generating "high-speed electrons,“ which had been considered difficult up to that time.

About Streamer Technology

The Streamer discharge is a type of plasma discharge that generates "high-speed electrons", which have high oxidative decomposition power in a three-dimensional and wide range, so the oxidative decomposition power is 1,000 times or more compared to general plasma discharge (glow discharge).

With this technology, high-speed electrons that combine with air components have a strong oxidative decomposition power, so they continuously act on odors, bacteria, and indoor pollutants such as formaldehyde.

So far, we have demonstrated in collaboration with universities and public research institutes that it acts on harmful substances such as influenza virus, norovirus, toxins and bacteria that cause food poisoning.


Daikin Streamer Discharge Technology Eliminates Harmful Substances
  1. Viruses and bacteria that have been proven to be deactivated
  • Influenza virus (type A, H1N1)
  • Highly virulent avian influenza virus (type A, H5N1)
  • Bacillus coli, O-157
  • Norovirus
  • Staphylococcus aureus
  • Pseudomonas aeruginosa
  • Tuberculosis bacteria
  • Toxins (enterotaxins)
  1. Allergens that have been proven to be decomposed
  • Fungal allergens: sooty modulds, aspergillus, eurotium, aspergillus niger, fusarium, penicillium
  • Pollen based allergens: cedar pollen, alder pollen, birch pollen, japanese cypress pollen, pencil cedar pollen, bald cypress pollen, mugwort pollen, archard grass pollen, ragwood pollen, sweet vernal grass pollen, timothy grass pollen, gleawort pollen, Japanese beech.
  • Allergens from animate beings: house dust mile (dermatophagoides pteronyssinus) (droppings and dead mites), house dust mite (dermatophagoides farinae) (droppings and dead mites), American cockroach (droppings), German cockroach (droppings), flea (droppings), dog epidermis (dander), cat epidermis (dander), hamster epidermis (dander).
  • Other: wheat flour


Tests that prove the effectiveness of the Streamer Technology.

*Following experiments were practised by third parties based on Daikin Industries Ltd’s request.



Hazardous Chemical Substances That Have Been Proved To Be Removed By Streamer Technology

Hazardous Chemical Substances Removed

  • Formaldehyde
  • Diesel exhaust particulates (DEP)
  • Hazardous chemical substances in exhaust gas: NOx, tetrachlorethylene, benzene, trichloroethylene, dichloroethane, dichloromethane, chloroform
  • VOC type hazardous chemical substances: iso-butanol, hexane, styrene, nonanoic acid, trimethl benzene, xylene, naphthalene, ethyl benzene, toluene, ethyl acetate

This product can be used to improve the quality of the air by removing airborne hazardous chemical substances, allergens, mould, bacteria, and virused, etc. However, this product is not intended for the creation of sterlle environments or for the prevention of pathogen infections.

This description relates to the Streamer Technology devised by Daikin, but not to this Air Purifier, Test results from use of the Streamer Technology are generated according to prescribed test methods conducted by daikin. Although the Streamer Technology is contained within this Air Purifier, this does not mean that precisely the same results will be experienced using this Air Purifier, Actual results may differ depending on the conditions of product installation and use of the actual product, etc.

This product is not a medical device, medical treatment device or a therapeutic good. This product is not intended to have any therapeutic use or to be used for the diagnosis treatment, relief or prevention of illness. If you have a health concern or are not feeling well, please consult a health care professional.

Experimental Results Of Daikin Streamer Technology
Target of experiment Testing organaization Test Method Report date
Norovirus Kobe University Graduate School ELISA method 12-Jan-2007
New strain of influenza virus
(Type A-H1N1)
Vietnam National Institute of Hygiene and Epidemiology Dilution method 14-Sep-2009
Highly pathogenic avian influenza virus
(Type A-H5N1)
Influenza virus (Type A-H1N1) Kitasato Research Center for Environmental Science CPE and TCID50 31-Jul-2009
Influenza virus (Type A-H3N2) Shanghai City Center for Disease Control and Prevention, etc. 8-Feb-2010
RS virus Wakayama Medical University CPE and TCID50 13-Apr-2012
Adenovirus Kitasato Research Center for Environmental Science 23-Jun-2017
Mouse Norovirus The University of Tokyo Graduate School 11-Oct-2018
Mouse Hepatitis Virus A59 (MHV-A59) Plaque method 28-Apr-2020
Novel Coronavirus (SARS-CoV-2) Okayama University of Science CPE and TCID50 8-Jul-2020
Target of experiment Testing organaization Test Method Report date
Bacteria (Escherichia coli/O-157) Japan Food Research Laboratories Pour plate culture method 8-Apr-2004
Bacteria (Staphylococcus aureus)
Toxin (enterotoxin) ELISA method 25-Aug-2004
Tubercle bacilli (ECG mutant) Kitasato Research Center for Environmental Science Plaque method 8-Mar-2010
Bacteria (tubercle bacilli/clinical strain) The Jikei University School of Medicine PCR method 15-Feb-2010
Bacteria (vancomycin-resistant enterococci/VRE) Japan Food Research Laboratories Pour plate culture method 19-Feb-2010
Bacteria (methicillin-resistant Staphylococcus aureus/MRSA)
Pseudomonas aeruginosa 12-Apr-2010
BacillusSerratia, and Arthrobacter 29-Sep-2010
Bacteria (Escherichia coli/ATCC) 10-Sep-2018
Moraxella bacteria 10-Jun-2019
Test target Testing organaization Test Method Report date
Mold (Black mold) Japan Food Research laboratories Pour plate culture method 28-Sep-2004
Target of experiment Testing organaization Test Method Report date
molds and mites (feces and carcasses) Wakayama Medical University ELISA method 14-Sep-2004
pollen + exaust gas + PM2.5 Yamagata University under the supervision of Professor Shirasawa, Tohoku Bunka Gakuen University IgE antibody test 8-Nov-2017
mites (feces and carcasses) + cedar pollen ELISA method 27-Sep-2019
Pollen(16 kinds) L.S.L. Asaka Research Laboratory under the supervision of Project Professor Kusakabe, graduate school of the University of Tokyo ELISA method 23-Jan-2020
Hazardous Gas
Target of experiment Testing organaization Test Method Report date
Adjuvant suppression effect (DEP) Wakayama Medical University
National Institute for Environmental Studies
ELISA method 1-Nov-2005
Adjuvant (VOC) Tohoku Bunka Gakuen University Attenuation method 8-Dec-2006

* This result was obtained by using a Streamer discharge device for testing in lab conditions.
The effect of products equipped with Streamer technology or results in actual use environments may differ.

Inactivation of Coronaviruses variants


Click here (https://www.daikin-streamer.com/en/) for more information

Test organization: Conventional strain: Faculty of Veterinary Medicine, Okayama University of Science
Alpha, Beta, Gamma, Delta, and Omicron strain: Research Institute for Microbial Diseases, Osaka University

Test Method: Quantification was performed by the TCID50 method using an acrylic box of about 31L.
The virus loads were quantified using Vero E6 / TMPRSS2 cells.
*This result was obtained by using a Streamer discharge device for testing in lab conditions.
The effect of products equipped with Streamer technology or results in actual use environments may differ.

Experiments on Viruses & Bacteria

  • Read more
    Demonstration of the inactivating effects against the novel Coronavirus (SARS- CoV-2) by Streamer Technology
  • Read more
    Suppresses various viruses that cause summer colds and measles

  • Read more
    Suppresses not only the viruses that cause colds and flu, but also the RS virus

  • Read more
    Suppresses pathogenic E. coli O157 which causes food poisoning
  • Read more
    Suppresses norovirus which causes winter food poisoning
  • Read more

Experiments on Allergens & Odor

  • Read more
    Suppresses 16 types of pollen that are scattered all year round in Japan

  • Read more
    Simultaneous decomposition of pollen + exhaust gas + PM 2.5 which worsens hay fever

  • Read more
    Decomposes house dust (mite’s feces and carcasses) that causes perennial allergic symptoms

  • Read more
    Decomposes molds and mites (feces and carcasses). Suppresses the causes of allergies

  • Read more
    Decomposes and suppresses the bacteria causing the unpleasant odor generated inside the air conditioner

  • Read more
    Decomposes and suppresses Moraxella bacterium, which causes the laundry’s damp odor

Press Release Information:

Daikin Confirms Effectiveness of Streamer Technology to Inactivate Coronaviruses (SARS-CoV-2) and Mouse hepatitis virus A59 (MHV-A59)

Daikin Confirms Effectiveness of Streamer Technology to Inactivate Omicron variant of Coronavirus (SARS-Cov-2)

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