Question 1
What is the primary function of an air handler unit (AHU) in an HVAC system?
Correct Answer:
Condition and circulate air throughout the building
Question 2
What causes 'coil freeze-up' on an evaporator coil?
Correct Answer:
Insufficient airflow or low refrigerant charge causing suction pressure to drop below freezing
Question 3
What is the recommended face velocity for evaporator coils in air handling units?
Correct Answer:
300-500 FPM
Question 4
What type of coil is used in an air handler for the heating mode in a heat pump system?
Correct Answer:
The same evaporator coil, which acts as a condenser during heating mode
Question 5
What does the 'fin spacing' on a coil affect?
Correct Answer:
Heat transfer surface area and airflow resistance
Question 1
Exam overview

About this Exam

Prepare with the EPA Section 608 Technician Certification (Universal) practice quiz. This question bank includes 30 questions covering coil, evaporator, handler, hvac, and drain. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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EPA Section 608 Technician Certification (Universal)

This practice set contains 30 questions from the matching question bank and focuses on coil, evaporator, handler, hvac, and drain. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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