- HEPA “High-Efficiency Particulate Air” – efficiency rating: 99.97% removal of airborne particles at 0.3 µm in size.
- DFS “Electrically Enhanced/Stimulated Air Filtration” – efficiency rating: 99.99% removal of airborne particles at 0.007 µm in size.
HEPA stands for “high-efficiency particulate air” (filter). - A HEPA filter is a mesh-like sheet of dense interwoven synthetic or glass fibers. HEPA is theoretically supposed to capture particles down to 0.3 (µm).
- As air passes through the filter, large particles get trapped, but anything smaller than 0.3 (µm) can get through and be released back out into the air. Many harmful pollutants like certain chemicals, bacteria, allergens, and airborne viruses are much smaller than 0.3(µm).
How does DFS work?
Each unit is individually tested with a class 1 laser particle counter and is certified to exceed traditional HEPA filtration providing the highest level of ultrafine particle and virus removal.
- The DFS high energy field creates a self‐contained, highly energized state in the main filter that clusters ultrafine particles to make them larger, allowing the main filter to effectively capture ultrafine particles.
- The DFS continually creates high energy exposure through the pleats and fibers of the main filter. This prevents organism growth in the main filter and prevents live organisms from escaping back into the air.
Read our recent article on the differences between HEPA, ULPA and DFS.