Anti-bacterial air purifiers -
Some products sold as air cleaners intentionally generate ozone. These products are not safe to use when people are present because ozone can irritate the airways.
Do not use ozone generators in occupied spaces. When used at concentrations that do not exceed public health standards, ozone applied to indoor air does not effectively remove viruses, bacteria, mold, or other biological pollutants.
Bipolar ionization also called needlepoint bipolar ionization is a technology that can be used in HVAC systems or portable air cleaners to generate positively and negatively charged particles. Provided manufacturers have data to demonstrate efficacy, manufacturers of these types of devices may market this technology to help remove viruses, including SARSCoV, the virus that causes COVID, from the air, or to facilitate surface disinfection of surfaces within a treated area.
This is an emerging technology, and little research is available that evaluates it outside of lab conditions.
As typical of newer technologies, the evidence for safety and effectiveness is less documented than for more established ones, such as filtration. Bipolar ionization has the potential to generate ozone and other potentially harmful by-products indoors, unless specific precautions are taken in the product design and maintenance.
If you decide to use a device that incorporates bipolar ionization technology, EPA recommends using a device that meets UL standard certification Environmental Claim Validation Procedure ECVP for Zero Ozone Emissions from Air Cleaners.
Please note that there are many air cleaning devices that do not use bipolar ionization — the device packaging or marketing materials will typically indicate if bipolar ionization technology is being used. Do-it-yourself DIY air cleaners are indoor air cleaners that can be assembled from box fans and square HVAC or furnace filters.
They are sometimes used during wildfire or other events when air quality is poor and other indoor air filtration options are unavailable. Evidence from multiple studies indicates that well-built DIY air cleaners can be of comparable effectiveness to commercial air cleaners in reducing airborne particles including viral particles.
However, their performance does vary based on the design selected and the quality of materials and assembly. Each time a DIY air cleaner is re-assembled after changing a filter, its performance may be different.
Commercial devices, on the other hand, are tested for performance, and this performance information can be used to match them to the size of a room. Therefore, EPA does not recommend the routine use of DIY air cleaners as a permanent alternative to products of known performance such as commercially available portable air cleaners.
However, this recommendation should not be interpreted to discourage the use of DIY air cleaners in circumstances when commercially available portable air cleaners or other products of known performance are not available.
Using a DIY air cleaner that was inadequately designed or assembled does not worsen indoor air quality and may still offer some benefits.
To address concerns that box fans in DIY air cleaners might be associated with increased risk of fire, EPA and Underwriter Laboratories evaluated the use of DIY air cleaners and the risk of fire.
Fans that were built since and met UL standard did not pose a fire hazard under the conditions tested in the study.
See Research on DIY Air Cleaners to Reduce Wildfire Smoke Indoors for more information. Return to Indoor Air and Coronavirus COVID Skip to main content.
Contact Us. Air Cleaners, HVAC Filters, and Coronavirus COVID Air Cleaners. How to select a portable air cleaner for a residence that can effectively remove viruses. Choose a portable air cleaner that is intended for the room size in which it will be used and be sure it meets at least one of the following criteria: it is designated as High-Efficiency Particulate Air HEPA , it is CADR rated for smoke, or the manufacturer states that the device will remove most particles in the size range below 1 um.
Tips For Operating a DIY Air Cleaner Run the device whenever the room is occupied. Make sure the device is free from obstructions and air can flow through it.
Run the device at the highest speed setting acceptable to you. Check the filter s regularly and replace when dirty. Coronavirus Home Disinfectants Indoor Air Drinking Water and Wastewater Frequent Questions.
When selecting an air purifier for viruses and bacteria, it is important to select a model that can accommodate the volume of air in the room where you will place it. This ensures there is enough airflow measured in air changes per hour or ACH to reduce pollutants levels consistently and over a period of time.
To help reduce the risks of airborne transmission, The EPA recommends positioning your air purifier for viruses with a clear path to each person in the room.
This ensures clean air can reach each person in the space. Even when Protect is on standby, the patent pending GermShield technology proactively monitors room conditions and kills viruses and bacteria on the filters using low air draft and plasma charging.
A gentle stream of air then ensures no new growth of germs. Tested on Staphylococcus Albus, MS2 bacteriophage deactivation and E. coli growth prevention. Please read our Privacy and Cookie notices to understand how we use your personal data.
By clicking the below button, you agree to our Terms of Use. Back to Blog Health. Feb 26, Air purifiers for viruses and bacteria. How airborne viruses and bacteria spread. Protect air purifier airflow pattern. protect kills germs and prevents growth with GermShield technology.
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