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RECOMMENDED - HEPA Air Purifier: High Efficiency Particulate Air (HEPA) air purifiers utilize the most effective filter technology on the market. Only HEPA air purifiers can remove a significant amount of allergens and pollutants from the air—up to 99% of airborne particles as small as 0.3 microns in size.
NOT RECOMMENDED – Electrostatic Air Purifier: An electrostatic air purifier does not use a filter, but rather an internal filtration system, which attracts charged particles. This internal filtration system has to be cleaned regularly, and over time becomes less efficient.
NOT RECOMMENDED – Ionic Ozone Air Purifier: An ionizer charges particles in the air, making it easier for filters and cleaners to trap and can be effective when used in combination with a HEPA style filter. However, when used alone, it is less effective and can produce harmful levels of ozone in the process.
NOT RECOMMENDED – PECO Air Purifier: PECO (photo-electrochemical oxidation) has not proven effective at removing harmful airborne particles in real-world settings. Only one purifier brand uses this method. The New York Times Wirecutter said it “turned in the worst performance on particulates of any purifier, of any size, of any price, that we have tested in the seven years that we have been producing this guide.”
HEPA (High Efficiency Particulate Air) filters are proven to be the most effective air purifying technology available today. HEPA air filters were actually designed by the U.S. Military in the 1940s, and are recommended by the U.S. Department of Defense as a must-have item for the safety of your household, to be used as protection from possible airborne toxins. HEPA filtration systems can trap 99.97% of particles larger than 0.3 microns. All Alen Air Purifiers use HEPA style air filters.
Various other air purification technologies are available, and Alen Corp recommends using these as secondary technologies to complement our powerful HEPA air filters. Used alone, the other air purification technologies are not believed to be potent enough to be an effective, stand-alone solution.
The EPA describes Volatile Organic Compounds as chemicals that evaporate at room temperature which are emitted by a wide array of products used in homes––including paints and lacquers, paint strippers, varnishes, cleaning supplies, air fresheners, pesticides, building materials and even furnishings. VOCs are released from products into the home both during use and while stored. According to the EPA, VOCs cause eye, nose and throat irritation, frequent headaches, nausea, and can also damage the liver, kidney and central nervous system.
Many of Alen Corp's air filters include a layer of Activated Carbon. This layer is covered with microscopic cracks and holes that are designed to trap and remove airborne odors, gases and chemicals from cleaning products, personal care items, smoke, cooking odors, spoiled food and more. If your environment contains higher levels of VOCs, view our recommended air purifier for chemicals and vocs.