Unverified85% confidenceTradeoffTime unknown
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HEPA
1
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85%
Confidence
Long-term
Relevance
-
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Unverified过滤等级越高（如H13级HEPA）过滤PM2.5越好，但风阻大幅增加导致有效风量下降和噪音上升，且滤网更换成本高；无重度雾霾地区选F7/F8(中效)+G4(初效)组合即可满足日常92% similarUnverifiedHEPA高效滤网越密集则PM2.5去除率越高，但风阻越大导致实际有效换气量下降、能耗和噪音上升；日常非重污染地区选F7~F9中效滤网+可换H13段更均衡90% similarUnverified过滤等级H13级HEPA对PM2.5去除率≥99.95%，H11级约95%；重污染地区（雾霾频发）选H13，但HEPA等级越高风阻越大，会拉低实际出风量并增加噪音和能耗89% similarUnverifiedHEPA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89% similarUnverified过滤等级越高（H13高效HEPA）PM2.5去除率越好但风阻越大，导致实际风量下降、能耗和噪音上升；重污染地区值得，轻污染地区用H11+初中效即可，避免过度堆滤芯89% similar
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