[KongchangAI]
Unverified82% confidenceSolutionTime unknown

老房无回水管实现快速热水的标准路径:1)确认热水器类型与最远用水点距离;2)末端最远处安装单向阀旁通装置借用冷水管回水;3)泵选感温+定时双模式;4)若追求全屋秒热则需专业增设回水管

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82%
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Long-term
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