313D Residential Air Conditioning Systems Mechanic

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A technician measures the total external static pressure (TESP) of a residential air handler and gets a reading of 0.95 in. w.c. (inches of water column). The equipment's data plate specifies a maximum TESP of 0.5 in. w.c. Which of the following is a direct consequence of this high static pressure?

The system will provide excess airflow, overcooling the space. The blower motor will work less, consuming less electricity. The compressor will short-cycle due to rapid heat exchange. The blower motor will be strained, leading to reduced airflow and potential premature failure.

Correct Answer:

The blower motor will be strained, leading to reduced airflow and potential premature failure.

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