Basics
Components
HVAC Systems
Maintenance
Troubleshooting
100

This term refers to the process of removing heat from an indoor space.


what is cooling?

100

A device that removes excess moisture from the air.

what is a dehumidifier?

100

This system is used to improve indoor air quality by introducing fresh air from outside.

what is an Air handling unit (AHU)?

100

The HVAC component that requires periodic replacement to maintain system efficiency.

what are air filters?

100

If the system has poor airflow, check this component for blockages or damage.

what is the blower motor?

200

The HVAC component that distributes conditioned air throughout a building.

what is a duct?


200

This device controls the flow of air in a duct system and can help to manage different zones.

what is a damper?

200

This type of HVAC system allows for individual temperature control in different zones of a building.


what is a multi-zone system?

200

This maintenance task involves checking and tightening electrical connections in an HVAC system.

what is electrical system inspection?

200

If the system is making a hissing sound, it could be due to issues with this component.

what is the expansion valve?

300

The basic principle of heating by transferring heat from one location to another using a fluid.

what is a heat pump?

300

This component helps to ensure the safe operation of a furnace by monitoring flue gases.

what is a flue sensor?

300

This system uses outside air to help cool a building and reduce energy consumption.


what is an economizer?

300

This component requires regular inspection to ensure it is free from debris and operating efficiently.

what is the blower motor?

300

If the system is making a loud, continuous noise, check this component for possible damage.

what is the fan belt?

400

The measurement of heat energy in an HVAC context, often associated with cooling capacity.

What is a british thermal unit (BTU)?

400

This component helps to prevent refrigerant from flowing back into the compressor.

what is a check valve?

400

An HVAC system that uses the ground to transfer heat for heating and cooling.

what is a geothermal HVAC system?

400

This HVAC component requires periodic inspection to ensure it is free from rust and corrosion.

what is the evaporator coil?

400

If the system has an intermittent operation issue, check this component for possible faults.

What is the control board?

500

The unit of measurement used to describe the airflow rate in an HVAC system.


what is cubic feet per minute? (CFM)

500

The HVAC component that helps to reduce noise and vibration

what is a vibration isolator?

500

This system uses air-to-air heat exchange to improve energy efficiency.

What is an energy recovery ventilator (ERV)?

500

The HVAC system used for heating has a component that should be inspected for leaks and corrosion during maintenance.

what is the heat exchanger?

500

The HVAC system is blowing hot air when it should be cooling. This could indicate an issue with this component.

what is the reversing valve?