Originally developed through a government grant with a focus on germ warfare, the patented HealthWay Disinfecting Filtration System (DFS) has been the leader in air purification technology worldwide, with 99.99% efficiency of removing particles as small as 0.007 micron, which is equivalent to 0.000007 mm. In order to guarantee the efficiency, filter classification and effectiveness on a number of criteria pollutants, multiple third-party testings were carried out by independent research institutes including Syracuse University BEES Lab, University of Buffalo IUCB, and Virginia Polytechnic Institute. This technology is currently used in hospitals, medical clean rooms, government buildings, and military applications.
High Efficiency Particulate Air (HEPA) filter is a common filter used in many air purifiers .The main characteristic that differentiates DFS and HEPA is the density of the filter media. Technically, a denser filter media like the one used in HEPA filters can filter out higher amount of particulates from the air compared to a less dense one. However, there is a drawback: the air flow is restricted due to the dense filter media, leading to a need of stronger blower which is noisier and energy consuming. The filter media of DFS is 15% less dense than HEPA filter, but it allows high air flow rate that filters the air through high energy fields on top and bottom of the filter media, killing up to 100% of microorganisms including fungi, bacteria and viruses. This disinfecting feature prevents the filter media from becoming the breeding ground for trapped microorganisms, ensuring pathogen-free indoor air. Besides, being less dense also means larger capacity for loading filtered particulates such as dust, hair and lint, reducing the need of frequent filter replacement.
Here's the summary of the comparison of some key criteria between DFS and HEPA:
Even though there might be technologies that offset the disadvantages of HEPA filter, DFS is a better choice for its disinfecting capability and efficiency. HealthWay patented DFS has been certified as Class II Medical Device by US Food and Drug Administration (FDA), giving assurance that this technology can provide adequate protection for building occupants from harmful microorganisms and allergy-inducing pollutants. By incorporating this technology in HealthWay Air Purification Systems, HealthWay became the leading brand among other air purification brands. For more information, please check out this webpage for our portable air purification systems.