The Difference Between Allergen HEPA Filtration
Browse Articles Videos tommy hilfiger uk By CategoryFood DrinkHobbies, Games Toys tommy hilfiger uk Allergens refer to any particle or substance that causes allergies in humans. Examples include pollen, dust, animal dander, dust, smoke and gases from appliances and household products like cleaners. An allergen filtration system is any filter system that is not a HEPA system. High efficiency particulate air, or HEPA, represents the ultimate in air filtration. A true HEPA system is only used in commercial settings such as hospital room tommy hilfiger uk s, burn centers and laboratories, according to the Environmental Doctor. Many products are sold as HEPA filtration, but they do not approach the high standards of the true system.The EPA outlines the rating system for mechanical filtration systems. The rating system is known as minimum efficiency reporting value, or MERV. The system rates systems from a low of 1 to a high of 20. The filters normally used in residential heating and air conditioning systems range from 1 to 4. They are used to protect the equipment, not keep the air clean. Allergen filtration with ratings of 7 through 13 are likely to come close to HEPA filters in removing tommy hilfiger uk particles, according to the EPA. Filters rated from 14 to 16 are often labeled as HEPA. True HEPA filters range from 17 to 20 and can remove up to 99.97 percent of all particles from the air.