Unverified80% confidenceTradeoffTime unknown
带HEPA的除甲醛机型，活性炭吸附饱和后会二次释放甲醛，需比颗粒物滤网更勤更换，除醛能力与滤芯成本成反比权衡
1
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80%
Confidence
Long-term
Relevance
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First Seen
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Unverified除甲醛型（厚活性炭）和纯颗粒物净化型是权衡关系：除醛滤芯风阻大、颗粒物CADR会下降，且活性炭吸附饱和后会二次释放，需比HEPA更勤更换90% similarUnverified带活性炭复合层的HEPA滤网可同时除甲醛/异味，但活性炭吸附饱和后需整体更换，纯颗粒物污染场景选纯HEPA更划算89% similarUnverified除甲醛需要大量活性炭滤芯，但活性炭吸附饱和后会二次释放，追求除醛的机型滤芯更换更频繁、耗材成本更高89% similarUnverified除甲醛的活性炭滤芯与除颗粒物的HEPA滤芯理想寿命不同（活性炭衰减更快），一体式复合滤芯只能整体更换，长期除醛需求下滤芯成本高于分体式滤芯机型89% similarUnverified复合滤芯(HEPA+活性炭一体)更换便宜但除甲醛和除颗粒物寿命不同步，往往活性炭失效时HEPA还能用；分体滤芯前期贵但可分别更换，长期使用综合成本更低86% similar
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