HVAC-Module 1-Introduction to HVAC
Questions and Answers | Latest Version
| 2024/2025 | Correct & Verified
Why is it important to have a properly sized system for heating and cooling?
✔✔A properly sized system ensures optimal performance, efficiency, and comfort without
overworking the equipment or wasting energy.
What is a programmable thermostat used for?
✔✔A programmable thermostat allows users to set specific times for temperature changes,
improving energy efficiency by adjusting heating or cooling when needed.
What is the purpose of ventilation in a building?
✔✔Ventilation helps remove stale air, pollutants, and moisture, while bringing in fresh air to
ensure a healthy indoor environment.
Why should filters be replaced regularly in a climate control system?
✔✔Replacing filters ensures proper airflow, improves air quality, and increases the efficiency of
the system by preventing dirt buildup.
1
, What is the difference between a split system and a packaged system?
✔✔A split system has separate components for indoor and outdoor units, while a packaged
system combines all components in one unit located outside.
What is the role of the evaporator in a cooling system?
✔✔The evaporator absorbs heat from the indoor air, causing the refrigerant to evaporate and
cool the air that is circulated back into the space.
Why is energy efficiency important when choosing a climate control system?
✔✔Energy efficiency reduces operating costs, conserves resources, and helps lower the
environmental impact of the system.
What is a zone control system?
✔✔A zone control system divides a building into separate areas with individual temperature
controls, allowing for personalized climate settings in different rooms.
What is the function of an expansion valve in a refrigeration cycle?
✔✔An expansion valve controls the flow of refrigerant into the evaporator, helping maintain the
proper pressure and temperature for efficient cooling.
2
Questions and Answers | Latest Version
| 2024/2025 | Correct & Verified
Why is it important to have a properly sized system for heating and cooling?
✔✔A properly sized system ensures optimal performance, efficiency, and comfort without
overworking the equipment or wasting energy.
What is a programmable thermostat used for?
✔✔A programmable thermostat allows users to set specific times for temperature changes,
improving energy efficiency by adjusting heating or cooling when needed.
What is the purpose of ventilation in a building?
✔✔Ventilation helps remove stale air, pollutants, and moisture, while bringing in fresh air to
ensure a healthy indoor environment.
Why should filters be replaced regularly in a climate control system?
✔✔Replacing filters ensures proper airflow, improves air quality, and increases the efficiency of
the system by preventing dirt buildup.
1
, What is the difference between a split system and a packaged system?
✔✔A split system has separate components for indoor and outdoor units, while a packaged
system combines all components in one unit located outside.
What is the role of the evaporator in a cooling system?
✔✔The evaporator absorbs heat from the indoor air, causing the refrigerant to evaporate and
cool the air that is circulated back into the space.
Why is energy efficiency important when choosing a climate control system?
✔✔Energy efficiency reduces operating costs, conserves resources, and helps lower the
environmental impact of the system.
What is a zone control system?
✔✔A zone control system divides a building into separate areas with individual temperature
controls, allowing for personalized climate settings in different rooms.
What is the function of an expansion valve in a refrigeration cycle?
✔✔An expansion valve controls the flow of refrigerant into the evaporator, helping maintain the
proper pressure and temperature for efficient cooling.
2
