Preview Questions HVAC Technician | Role Specific Skill

Question 1: How does an HVAC technician increase the seasonal energy efficiency ratio (SEER) of an air conditioning system?

Which action should you take?

Choose only one option

By installing a unit with a higher SEER rating and ensuring proper maintenance

By increasing refrigerant charge levels

By reducing the airflow through the system

By using the unit for longer periods of time

Question 2: What is the role of the expansion valve in an HVAC system, and how would you troubleshoot it?

Which action should you take?

Choose only one option

It regulates airflow across the evaporator coil; check for air leaks

It regulates refrigerant flow into the evaporator coil; check for blockages or ice buildup

It controls the air filter performance; inspect for clogging

It controls system temperature settings; inspect the fan speed

Question 3: The thermostat reads the correct temperature, but the system will not engage. What is the first thing to check?

Which action should you take?

Choose only one option

The refrigerant charge

The ductwork for air leaks

The power supply and fuses

The compressor and condenser

Question 4: When repairing an HVAC blower motor, which of the following should be checked first?

Which action should you take?

Choose only one option

The system's refrigerant pressure and charge

Electrical connections, capacitor, and motor bearings

The air filter and ducts for blockages

The thermostat calibration and settings

Question 5: How does an HVAC technician ensure the correct airflow in a new duct system installation?

Which action should you take?

Choose only one option

By estimating the airflow based on the number of vents

By reducing the number of ducts to minimize airflow

By measuring static pressure and adjusting duct sizes to ensure balance and efficiency

By increasing the fan speed to overcome resistance

Question 6: How should an HVAC technician size a furnace for a new construction project?

Which action should you take?

Choose only one option

By calculating the total heat loss of the building using the Manual J method

By using a simple rule of thumb based on square footage

By relying solely on the building's previous heating system size

By choosing the largest furnace available for the space