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However, in the north, the winter cold regions far more heat load in the summer, resulting in cold soil geothermal heating load imbalance, soil moisture, reduce soil source heat pump system operation efficiency, or even failure.

But, in north cold area, because the winter heat load is bigger than the summer cold load far, causes the soil ground temperature to be unbalanced, the soil temperature reduces gradually, creates the soil source heat pump system operating efficiency to reduce, even expires.

However, in Northern cold region, winter heating load greater than the summer cooling load, leading to imbalance in the soil temperature, soil temperatures gradually reduced, causing ground-source heat pump system operation efficiency, even failure.

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