推荐回答（1个）
前置滤网用来过滤除空气中体积较大的微粒（如尘埃、毛发等），是可以清洗的。
HEPA高效微粒滤网，不能清洗，需要定期更换。一般会选用韩国进口滤纸，HEPA级别H12级。可以有效滤除空气中香烟烟雾，PM2.5，花粉，螨虫等0.3微米以上的颗粒物。
活性炭滤网，一般要选择同等体积下，高碘值、高重量的滤网。可以有效去除空气中游离态的甲醛、笨、二恶英及臭氧等常见空气异味与有害化学污染物。这个滤网也是需要定期更换的。
超高效玻纤滤网。一般是进口医用级别，要符合欧洲EN1822检测标准，可以滤净效果99.95%，高效滤除小至0.003微米的细菌、病毒、真菌孢子、花粉、氡气衰变产物、PM2.5等固体颗粒物和细菌病毒。雾霾天最好使用这种滤网。
高分子气味滤网，制作工艺复杂，活性炭碘值和重量都是超高的。这种滤网在去除高浓度甲醛的同时更是对低浓度甲醛的去除效果显著。（绝大部分用户居住环境甲醛超标都属于低浓度甲醛超标）新装修的房子最好挑选这种滤网
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