Inhibitory effect on SARS-CoV-2 confirmed by the Panasonic’s air conditioner with nanoe™ X

Panasonic Vietnam has recently received public feedback on the inhibitory effect on SARS-CoV-2 confirmed by the Panasonic’s air conditioner with nanoe™ X, we would like to clarify as follows.

Nanoe™ X is an electrostatic atomization technology, that collects invisible moisture in the air and applies a high voltage to it to produce “hydroxyl radicals contained in water”. Hydroxyl radicals inhibit the growth of pollutants such as bacteria and viruses. They are characterized by being strongly oxidative and highly reactive, hence a short life span. However, the “hydroxyl radicals contained in water” was verified to have a longer lifespan and disperse across a wider area. Nanoe™ X has an inhibitory effect on both airborne and adhered substances.

Panasonic has been conducting research on this technology over the past 20 years since 1997, and has verified its effectiveness in a variety of areas, including inhibiting pathogenic microorganism (bacteria, fungi, and viruses) and allergens, breaking down PM 2.5 components that have adverse effects on the human body*1.

In 2012, Panasonic conducted a test with a third-party organization and announced that "hydroxyl radicals contained in water" technology could be expected to have an inhibitory effect on new viruses*2.

In September 2020, Panasonic has verified in collaboration with Texcell*3 the inhibitory effect of the nanoe™ X technology with the benefits of hydroxyl radicals on the novel coronavirus in a small test space of 45L using nanoe™ X generator. As the result, over 99.99% of novel coronavirus (SARS-CoV-2) activity was inhibited within 2 hours. The test information was published on Panasonic Vietnam website at:

After that, Panasonic continued to cooperate with Texcell to test using air conditioner with nanoe™ X in a larger test space. Even in this circumstance, Texcell has now certified that in the actual space of 6.7m3 the nanoe™ X does have 91.4% of the inhibitory effect on SARS-CoV-2 in 8 hours and 99.7% of the inhibitory effect on the SARS-CoV-2 in 24 hours using the air conditioner with nanoe™ X. The test information was published on Panasonic Vietnam website at:

As mentioned clearly in individual reports, the tests were carried out in a closed laboratory environment and were not designed to assess its efficacy in uncontrolled living spaces. 

Panasonic is a prestigious Japanese brand with a history of 100-year development globally, of which, with 50 years of official presence in Vietnam aiming to focus on providing wellness solutions and leading in human-oriented technology development. We committed to providing quality solutions and products together with trustworthy and accurate information to end users for choosing authentic and quality products as well as creating a healthy, safe and convenient life for them.



*1: Main releases on verification cases
- May 12, 2009:Positive effects of charged water particles on viruses, bacteria, and agricultural chemicals have been verified.
- October 20, 2009: The new influenza virus inhibition effect of charged water particles has been verified.
- February 20, 2012:Suppression effect of charged water particles on pet-related allergens, bacteria, fungi, and viruses have been verified.
- January 16, 2014:Nano-sized electrostatic atomised water particles effectively breaks down PM2.5 components and inhibits growth of fungi attached to Yellow Sand.

*2: January 26, 2012: Virus suppression effect of charged water particles has been verified by the virus clearance test. Co-verified with Charles River Biopharmaceutical Services GmbH, a German testing organization.

*3: Texcell is a global contract research organisation that specialises in viral testings, viral clearance, immunoprofiling and R&D or GMP cell banking, for your R&D, GClP, GLP and GMP projects.
With more than 30 years of experience and roots within the Pasteur Institute in Paris, Texcell has a long-recognized expertise in viral testing with a broad range of protocols for the detection of adventitious agents.
Texcell is the first spin-off of the Pasteur institute of Paris created in 1997.