Air Conditioning Repair Certification (ETI) Practice Exam

Question: 1 / 400

What is the effect of a clogged air filter on an air conditioning system?

Increases efficiency

Decreases efficiency

A clogged air filter significantly decreases the efficiency of an air conditioning system. When the air filter becomes dirty or blocked, it restricts the airflow into the system. This restriction can cause the air conditioning unit to work harder to move air through the system, leading to increased energy consumption and higher operating costs. The restricted airflow also causes the coils to become less effective at heat exchange, which means that the system cannot cool the air as effectively as it should, potentially causing the temperature inside the building to rise and putting additional strain on the system components. Over time, this can lead to further mechanical issues, increased wear and tear, and potentially premature system failure. Therefore, the correct response is that a clogged air filter decreases efficiency.

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No effect on performance

Increases capacity

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