tools
What tool is commonly used to measure refrigerant pressure in an HVAC system?
manifold gauge
What is the purpose of a compressor in an HVAC system?
The compressor pumps refrigerant through the system and increases its pressure and temperature.
What is the main purpose of a gas furnace in an HVAC system?
A gas furnace heats air using natural gas or propane and distributes warm air throughout the building.
What is the main purpose of an AC unit in an HVAC system?
An AC unit cools and removes humidity from indoor air to keep the building comfortable.
What does HVAC stand for?
HVAC stands for Heating, Ventilation, and Air Conditioning.
Which HVAC tool is used to detect electrical voltage and current?
multimeter
What does the evaporator coil do in an HVAC unit?
The evaporator coil absorbs heat from indoor air to help cool the building.
What part of a gas furnace ignites the burners?
The igniter
What refrigerant component in an AC unit compresses the refrigerant gas?
The compressor
Why is changing an air filter important in HVAC maintenance?
Changing the air filter improves airflow, indoor air quality, and system efficiency.
What tool helps HVAC technicians cut and shape sheet metal ductwork?
Tin snips
What is the function of the condenser coil?
The condenser coil releases heat from the refrigerant to the outside air.
What does the heat exchanger do in a gas furnace?
The heat exchanger transfers heat from the burners to the air without mixing combustion gases with indoor air.
What does the evaporator coil do in an AC unit?
The evaporator
What is the difference between heating and cooling systems in HVAC?
Heating systems warm indoor air, while cooling systems remove heat from indoor air.
Which tool is used to remove air and moisture from a refrigeration system before charging it?
A vacuum pump
What does a thermostat control in an HVAC system?
The thermostat controls the temperature by turning the heating or cooling system on and off.
Why is a blower motor important in a gas furnace?
The blower motor pushes heated air through the ductwork and into the rooms.
What is the function of the condenser fan in an outdoor AC unit?
The condenser fan helps release heat from the refrigerant to the outdoor air.
How does refrigerant help an air conditioning system work?
Refrigerant absorbs and transfers heat to cool the air inside a building.
What HVAC tool is used to measure airflow from vents and ducts?
anemometer
What is the job of an air filter in HVAC equipment?
The air filter removes dust, dirt, and other particles from the air to improve air quality and protect the system.
What safety device shuts off the furnace if it overheats?
The limit switch shuts off the burners if the furnace becomes too hot.
Why is refrigerant important in an AC system?
Refrigerant absorbs and transfers heat, allowing the AC system to cool the air effectively.
Why is regular maintenance important for an HVAC system?
Regular maintenance helps improve efficiency, extend the life of the HVAC system, reduce energy costs, and prevent breakdowns.