Unverified83% confidenceTradeoffTime unknown
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
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83%
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Long-term
Relevance
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Unverified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HEPA92% 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过滤等级越高（F7/H级）净化效果越好但风阻越大、通风量衰减越明显，且滤芯更换成本更高；仅防尘防虫需求选G4即可，避免为不必要的高效滤芯牺牲通风量85% 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85% 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85% similar
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