Unverified85% confidenceDecision RuleTime unknown
标准三级过滤配置应为：G4初效（拦大颗粒、延长HEPA寿命）+ 活性炭（除甲醛异味）+ H13高效；缺初效滤网会导致HEPA快速堵塞，寿命缩短一半以上
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85%
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Long-term
Relevance
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Unverified滤网配置应为初效（G4）+中效（F7/F8）+HEPA（H11-H13）三级，H13级对PM2.5去除率≥99.95%；只有单层HEPA无初效预过滤的机型，HEPA堵塞快、更换成本高85% similarUnverified过滤配置应为初效（G4）+高效（H11或H13）分级过滤，H13级对PM2.5一次去除率≥99.95%，H11约95%；仅有单层滤网或标称'HEPA'但不标等级的机型净化能力存疑83% similarUnverified过滤PM2.5应认准H11-H13级HEPA滤网，H13级对0.3微米颗粒过滤效率≥99.95%；重污染城市优先选带初效+中效+H13三级过滤结构，可延长HEPA寿命80% similarUnverified滤网为复合型HEPA+除甲醛一体滤芯，更换成本较高，日常使用建议关注滤网寿命提示并按时更换80% similarUnverified过滤效率看CADR和滤网等级：H11级滤网PM2.5去除率约95%，H13级达99.97%（HEPA），雾霾重灾区应选H13级并确认带初效+活性炭多级过滤以延长HEPA寿命79% similar
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