Which of the following refrigerants has been widely used but is being phased out due to its impact on the environment? Select all that is applicable

• R-22

• R-410A

• R-134a

• R-407C

What are the functions of an air handler in an HVAC system? Select all that it is applicable

• To distribute conditioned air throughout the building

• To regulate the flow of refrigerant

• To control humidity levels

• To generate heat

Which of the following HVAC system types is typically used in residential buildings? Select all the options that are correct

• Variable Refrigerant Flow (VRF) system

• Chilled Beam system

• Packaged HVAC system

• Variable Air Volume (VAV) system

What is the purpose of zoning in an HVAC system?

• To control the direction of airflow

• To regulate temperature independently in different areas of the building

• To circulate refrigerant

• To filter air particles

What is the function of a thermostat in an HVAC system?

• To maintain a constant temperature

• To control humidity levels

• To circulate refrigerant

• To filter air particles

Which HVAC component is responsible for removing moisture from the air?

• Evaporator

• Condenser

• Dehumidifier

• Air Handler

What is the primary purpose of ventilation in an HVAC system?

• To regulate temperature

• To control humidity levels

• To circulate refrigerant

• To provide fresh air and remove stale air

What is the typical operating range for relative humidity in indoor environments?

• 0% - 20%

• 20% - 40%

• 40% - 60%

• 60% - 80%

Which of the following is true about the role of a condenser in an HVAC system?

• It absorbs heat from the indoor air

• It releases heat to the outdoor air

• It controls the flow of refrigerant

• It regulates the temperature of the evaporator coil

What is the purpose of an evaporator coil in an HVAC system?

• To release heat to the outdoor air

• To absorb heat from the indoor air

• To regulate airflow

• To control humidity levels