Unverified80% confidenceTradeoffTime unknown
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
1
Sources
80%
Confidence
Long-term
Relevance
-
First Seen
Sources
Related Entities
Related Claims
Unverified新风系统标准滤网组合为 G4初效 + F7中效 + H13高效，缺一层则PM2.5净化率会显著下降，纯G4+F7组合对PM2.5净化率通常低于85%，无法有效防雾霾86% similarUnverified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85% similarUnverified带过滤功能的窗式通风器优先选可拆洗初效+可更换G4/F7滤芯配置；F7级（≥PM2.5过滤）适合雾霾城市，G4级仅挡大颗粒灰尘，选购时确认滤芯是否为通用规格便于后续更换82% similarUnverified过滤精度越高更换越勤且风阻越大：H13比H11过滤更好但阻力大、CADR值下降更快，普通除尘需求H11+定期清洁前置滤网更经济78% similarUnverified过滤效率越高滤材阻力越大，同风机下实际风量下降越多。HEPA+活性炭双层滤芯比单层棉过滤效果好但会削弱吸力约20～30%，需配更强风机补偿77% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/350796API
curl https://kongchang.com/api/v1/knowledge/claims/350796MCP
get_claim(id=350796)