Purchase of fresh air system full (obvious) heat exchanger error
2021-08-17 Purchase of fresh air system full (obvious) heat exchanger error

It is necessary to pay attention to the quality of the motor, the quality of the motor, the life may differ several times, good motor life can reach 15, 20 years or even longer; The service life of poor quality may only be broken in one to three years, and the longer the operation time, the noise will greatly increase. For the new machine, whether the motor quality is good or bad, the operation generally will not have a problem, so the initial is not obvious, the key lies in the long-term operation.

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