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Daikin's streamer technology inactivates more than 99.9% of the novel coronavirus (SARS-CoV-2)

Streamer technology & Coronavirus

Daikin confirms the effectiveness of its patented streamer technology, which successfully inactivated more than 99.9% of Novel Coronavirus (SARS-CoV-2) after irradiating the virus for 3 hours.

The study has been conducted by Daikin Industries Ltd in cooperation with Professor Shigeru Kyuwa from the Department of Biomedical Science of the University of Tokyo, and a group of research led by Professor Shigeru Morikawa from the Department of Microbiology of the Okayama University of Science.


Experimental results

The research team conducted an experiment where the viruses were irradiated for a duration of 3 hours with Daikin Flash Streamer technology.

The results of this experiment showed that:

  • Flash Streamer discharge inactivated 93,65% of coronavirus (SARS-CoV-2) after an irradiation time of 1 hour

  • Flash Streamer discharge inactivated 99,97% of coronavirus (SARS-CoV-2) after an irradiation time of 3 hours


Source: “Study report on the inactivation effect of plasma ion generator (Daikin Streamer) on SARS-CoV-2” redacted by Shigeru Morikawa, Department of Veterinary Medicine, Microbiology Course, Okayama University of Science
Virus survival graph covid19

The tests described herein only concern the patented Streamer Technology. The effects of products equipped with Streamer Technology or the effects in actual use environment may differ. For more information on the Daikin products incorporating the Streamer Technology, please refer to the relevant product information.

About Streamer technology

Streamer technology, developed by Daikin in 2004, performs an oxidative decomposition of harmful substances. The Streamer discharge is a type of plasma discharge featuring an innovative air purification technology that stably generates high-speed electrons.

Its oxidative decomposition capability is much higher than the conventional plasma discharge (glow discharge). Moreover, when combined with air components, these high-speed electrons have a capability for powerful oxidative decomposition that continuously remove odours, bacteria and indoor air pollutants such as formaldehyde.


Daikin Streamer Research Institute for more reliable and comfortable air

Daikin's Streamer technology revolutionizes air purification. This website provides information on the results of demonstration experiments conducted with various research institutions.


Demonstration Experiments List

Experiment results of the Streamer technology that have been verified so far.

Experimental results of Daikin Streamer technology

Demonstration of the inactivating effects against the novel Coronavirus (SARS-CoV-2) by Streamer technology. >>Read more

Suppresses not only the viruses that cause colds and flu, but also the RS virus.

>>Read More

Suppresses norovirus, which causes winter food poisoning.

>>Read More

Suppresses various viruses that cause summer colds and measles.

>>Read More

Suppresses pathogenic E. coli O157, which causes food poisoning.

>>Read More

Suppresses 16 types of pollen that are scattered all year round in Japan.

>>Read More

Decomposes house dust (mite's feces and carcasses) that causes perennial allergic symptoms.

>>Read More

Simultaneous decomposition of pollen + exhaust gas + PM2.5 which worsens hay fever.

>>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.

>>Read More

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