Preview Questions HVAC Technician | Role Specific Skill

Question 1: How do system designers calculate the heating and cooling load for an entire building?

Which action should you take?

Choose only one option

Based on historical energy usage

Using the weather patterns and system efficiency

Using the building's structural integrity

Using the building's thermal properties and occupancy

Question 2: What should be done if a system's refrigerant pressure is too low during troubleshooting?

Which action should you take?

Choose only one option

Increase the refrigerant level without repairing leaks

Locate and repair any refrigerant leaks, then recharge the system to the correct level

Check only the thermostat to rule out electrical issues

Ignore the issue until the system fails completely

Question 3: How does the refrigerant type chosen in an HVAC system design affect its environmental impact?

Which action should you take?

Choose only one option

It determines the Global Warming Potential (GWP) and Ozone Depletion Potential (ODP) of the system

It has no environmental impact

It only affects the energy efficiency of the system

It only influences the cost of installation

Question 4: What is the most important consideration when installing an air handling unit (AHU) for optimal operation?

Which action should you take?

Choose only one option

Prioritizing aesthetic considerations and ignoring operational factors

Ensuring that the unit is installed as quickly as possible without checking specifications

Ensuring that the AHU is correctly sized for the space, has adequate airflow, and is properly connected to ducts

Just ensuring the unit is installed in the easiest location

Question 5: When considering HVAC system design, what is the significance of duct sealing in improving energy efficiency?

Which action should you take?

Choose only one option

Proper sealing prevents air leakage, reducing energy loss and improving system efficiency

Duct sealing primarily improves airflow, but not energy efficiency

Duct sealing is unnecessary as it has minimal impact on energy efficiency

Sealing ducts increases system pressure, thereby increasing energy use

Question 6: What is the first step in troubleshooting an HVAC unit that is blowing warm air despite the thermostat setting being lower?

Which action should you take?

Choose only one option

Recalibrate the thermostat

Increase the thermostat setting to higher temperature

Inspect the filter for blockage

Check for refrigerant leaks and ensure proper refrigerant charge