Unverified85% confidenceDecision RuleTime unknown
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
1
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85%
Confidence
Long-term
Relevance
-
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Unverified过滤等级看HEPA标号，H13级PM2.5去除率≥99.95%，H11约95%，重污染地区(雾霾城市)应选H12/H13，同时确认有初效滤网保护HEPA延长寿命90% 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89% similarUnverifiedH13级HEPA滤芯PM2.5去除率≥99.95%但风阻大、耗能高、更换成本高；H11/H12级去除率95%-99.5%阻力小更省电。非重度雾霾地区H12足够，滤网分级(初效+中效+HEPA)可延长HEPA寿命88% similarUnverified过滤效率看是否带H11以上HEPA滤网（对PM2.5过滤≥95%）；但真正判断防霾能力要看CADR和洁净新风量，只标'99%过滤效率'而不标风量的属营销话术。北方重霾地区建议选H13级（≥99.95%）88% similarUnverified过滤效率看HEPA等级：H11约95%、H12约99.5%、H13约99.95%对PM2.5去除率。重污染地区（如京津冀冬季）建议H12-H13，但HEPA等级越高风阻越大，需搭配更强风机否则实际风量骤降87% similar
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