Preview Questions HVAC Technician | Role Specific Skill

Question 1: Which of the following regulations dictates the use of low global warming potential (GWP) refrigerants in new HVAC installations?

Which action should you take?

Choose only one option

The National Electric Code (NEC)

The Energy Policy Act (EPACT)

The Occupational Safety and Health Act (OSHA)

The EPA's Significant New Alternatives Policy (SNAP)

Question 2: What is the purpose of installing a TXV (Thermostatic Expansion Valve) during HVAC system installation?

Which action should you take?

Choose only one option

To cool the refrigerant before it enters the system

To reduce energy consumption by limiting airflow

To regulate the refrigerant flow into the evaporator coil, improving cooling efficiency

To increase refrigerant pressure in the system

Question 3: What is the maximum allowable level of refrigerant leakage that requires corrective action under EPA regulations?

Which action should you take?

Choose only one option

Leaks are allowed if the refrigerant charge is within the recommended limits

There is no maximum allowed; all leaks must be reported

Any detectable leak of refrigerant that exceeds 15% per year requires corrective action

Leaks that cause a decrease in system cooling efficiency

Question 4: What is the impact of improper thermostat calibration on energy efficiency?

Which action should you take?

Choose only one option

It can cause the system to overheat or overcool, leading to unnecessary energy consumption

It only affects cooling efficiency, not heating

It has no impact as long as the system is set to the correct temperature

It causes the system to run intermittently, saving energy

Question 5: What is the most common cause of short cycling in an HVAC system during repair or installation?

Which action should you take?

Choose only one option

Oversized ductwork in the system

Faulty wiring in the control panel

Low refrigerant charge or airflow issues

Improper thermostat calibration or placement

Question 6: What action should be taken if the air conditioning system is short-cycling, turning on and off rapidly?

Which action should you take?

Choose only one option

Replace the fan motor immediately

Check for refrigerant leaks, clogged filters, or incorrect thermostat settings

Increase the thermostat temperature to reduce system demand

Recalibrate the compressor without checking other components