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A HEPA filter (High Efficiency Particulate Arrestance) is also known as an ABSOLUTE Filter because of its efficiency. The true HEPA Filter was developed during World War II by the Atomic Energy Commission and it was designed to remove and capture radioactive dust particles from the air which might escape andpresent a health hazard to researchers. The true HEPA Filter was specifically designed to protect the Human Respiratory System. The HEPA Filter is recognized by the ( EPA ) Environmental Protection Agency as the ULTIMATE in cleansing the air and is a proven method, that retains and filter out all particles from the air that passes through it down to 0.3 microns in size at an efficiency rating of 99.9994%. Air cleaners with HEPA Filters are used in medical, laboratory and commercial applications where totally clean air environments are required for human health and safety. However, in Mexico due to the severe pollution that prevails in larger cities as Mexico City, Guadalajara, Monterrey and Puebla, the air purifiers CLOUD 9 are used in computer rooms, homes, material conservation, health, buildings, gyms and other areas where clean and particle free air is essential. Its very important to know that all HEPA-Air Cleaners are not the same, a strong fan is REQUIRED and ESSENTIAL beacuse the efficiency of any filter is meaningless if the unit can not draw air to and into the HEPA Filter itself. Only CLOUD 9 units achieved a 99%+ , the answer can be explained by looking at the design. The CLOUD 9 units push the air through a sealed airpath and right into the HEPA filter. All of the air gets cleaned as you would expect. Another important point is NOISE, CLOUD 9 is the quietest unit in the market and is important to remember the the dB scale is set up so that a bigger number is a HUGE difference in noise. |