HVAC EOY worksheet

Which of the following is a primary function of an air filter in an HVAC system?

• To cool the air

• To remove dust and particles from the air

• To circulate refrigerant

• To heat the air

What does the acronym HVAC stand for?

• Heat, Ventilation, and Air Conditioning

• Heating, Ventilation, and Air Conditioning

• Heating, Vacuum, and Air Circulation

• Heat, Vacuum, and Air Conditioning

Which component in an HVAC system is responsible for transferring heat from inside a building to the outside?

• Evaporator coil

• Condenser coil

• Blower motor

• Thermostat

What is the main purpose of a thermostat in an HVAC system?

• To filter air

• To regulate temperature

• To circulate refrigerant

• To remove humidity

Which of the following is a basic safety protocol when working with HVAC electrical components?

• Wear sandals

• Turn off the power supply

• Use metal tools only

• Work with wet hands

Which part of an HVAC system is primarily responsible for removing heat from the air inside a building?

• Compressor

• Evaporator coil

• Expansion valve

• Ductwork

Which gas is commonly used as a refrigerant in modern HVAC systems?

• Oxygen

• R-410A

• Nitrogen

• Carbon dioxide

Why is it important to regularly replace or clean HVAC air filters?

• To increase noise levels

• To maintain air quality and system efficiency

• To reduce system pressure

• To increase humidity

Explain the function of the compressor in an HVAC system.

• It cools the air directly

• It compresses refrigerant to increase its pressure and temperature

• It filters the air

• It controls the system’s temperature

A technician is about to service an HVAC unit. What is the first safety step they should take?

• Remove the air filter

• Turn off the power supply to the unit

• Check the refrigerant level

• Open the refrigerant lines