Unverified75% confidenceTradeoffTime unknown
过滤等级越高（HEPA H13）风阻越大，会显著削弱自然进风量并加快风机能耗与噪音，普通城市环境用F7/中效滤芯即可平衡过滤与风量，不必盲目上H13
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75%
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Long-term
Relevance
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UnverifiedHEPA滤芯的过滤效率与风阻成正比，H13/H14级过滤更彻底但风阻大导致同功率下CADR降低、噪音升高，日常防雾霾H12~H13已足够，无需为H14牺牲风量和静音91% similarUnverified过滤等级越高（HEPA H13）净化越彻底，但滤网阻力越大导致实际通风量衰减20-40%且噪音上升；追求大通风量与追求高净化不可兼得，重净化选带增压风机的动力型，重通风选无动力自然进风型91% similarUnverifiedHEPA等级越高过滤越干净，但风阻增大导致同档位风量下降20-40%、噪音和电耗上升；日常城市空气选H12+初效滤网组合，兼顾净化与风量比一味追求H13更实用90% similarUnverified过滤等级越高（H13/H14 HEPA）PM2.5去除率越好但风阻越大，会降低有效风量并加大噪音和能耗；空气质量常年良好地区用F7-F9中效滤网即可，无需堆料HEPA89% similarUnverified过滤精度越高（HEPA H13级）风阻越大，会明显削弱出风量和制冷效率、增加压缩机负荷，家用挂机建议粗效+静电棉组合即可，追求H13以上应选带独立净化模块的空调而非改装滤网88% similar
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