A heat pump with hot water system provides supplementary heating in the winter with geothermal energy.

热泵热水系统与地热系统，提供补充了冬季供暖。

youdao

A heat pump with hot water system provides supplementary heating in the winter with geothermal energy.

热泵热水系统与地热系统，提供补充了冬季供暖。

youdao