Question 1
How often should air conditioning system air filters typically be inspected or replaced in a residential application?
Correct Answer:
Every 1–3 months depending on usage and filter type
Question 2
What is the recommended minimum coil cleaning frequency for a residential split-system AC under normal operating conditions?
Correct Answer:
Once per year
Question 3
Which tool is used to measure refrigerant system pressures during a preventive maintenance check?
Correct Answer:
Manifold gauge set
Question 4
What does a high delta-T (temperature difference) across the evaporator coil typically indicate?
Correct Answer:
Good system performance with proper heat absorption
Question 5
During a preventive maintenance visit, a technician finds the condenser fins are bent and partially blocking airflow. What is the correct action?
Correct Answer:
Straighten the fins using a fin comb
Question 1
Exam overview

About this Exam

Prepare with the HVAC R Certification Exam practice quiz. This question bank includes 100 questions covering technician, refrigerant, residential, primary, and conditioning. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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HVAC R Certification Exam

This practice set contains 100 questions from the matching question bank and focuses on technician, refrigerant, residential, primary, and conditioning. 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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