Preview Questions HVAC Technician | Role Specific Skill

Question 1: What is the first step to take when an HVAC system fails to cool a building?

Which action should you take?

Choose only one option

Check the refrigerant levels and inspect for any leaks

Increase the fan speed and observe the airflow

Inspect the electrical components for faults

Replace the thermostat immediately

Question 2: In a heat pump system, if the system is running in heating mode but not producing heat, what is the likely cause?

Which action should you take?

Choose only one option

Incorrect refrigerant charge

A dirty evaporator coil

Malfunctioning thermostat

Faulty reversing valve

Question 3: What could be the cause of short cycling in an HVAC system?

Which action should you take?

Choose only one option

Overheating of the compressor

Incorrectly sized system

Faulty air handler

Dirty condenser coils

Question 4: What is the requirement of the R-22 phase-out rule in HVAC systems?

Which action should you take?

Choose only one option

R-22 is banned for use in all HVAC systems after 2025

R-22 refrigerant is not subject to any regulations

R-22 refrigerant is being phased out and must be replaced by an alternative refrigerant in new systems

All existing HVAC systems must be replaced with new units using R-22

Question 5: When an HVAC system is not cooling properly and the compressor is running, what should be done?

Which action should you take?

Choose only one option

Replace the compressor immediately

Check for refrigerant leaks, ensure proper airflow, and inspect the evaporator coil

Increase the refrigerant charge to full capacity

Recalibrate the thermostat and reset the system

Question 6: How do you identify a problem with the compressor in an HVAC system?

Which action should you take?

Choose only one option

By cleaning the compressor area without electrical tests

By checking the refrigerant charge only

By measuring airflow before and after the compressor

By checking the compressor's voltage, current draw, and listening for unusual noises