[KongchangAI]
Unverified90% confidenceFactTime unknown

空气能热水器COP≥3.5为节能优选,但COP是标准工况(环境20度、水温55度)测得,冬季实际能效会显著下降,北方选购需看-10度以下的低温工况COP≥2.0才靠谱

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