CHI Heating, Ventilation, & Air Conditioning (HVAC) Inspection 1 — Questions and Answers
Question 1: What is the purpose of the condensate drain in an HVAC system?
- Heat the air
- Remove condensed water (Correct answer)
- Control refrigerant flow
- Distribute air evenly
Correct answer: Remove condensed water
The condensate drain removes moisture collected from the evaporator coil to prevent water damage and system malfunction.
Question 2: Which component of an HVAC system is responsible for cooling the air?
- Compressor
- Evaporator coil (Correct answer)
- Thermostat
- Condenser fan
Correct answer: Evaporator coil
The evaporator coil absorbs heat from the air inside the building, allowing the air to cool as it passes over the coil.
Question 3: What is the recommended location for a home thermostat?
- Near windows
- In a kitchen
- On an interior wall away from vents (Correct answer)
- Above a radiator
Correct answer: On an interior wall away from vents
Thermostats should be placed on interior walls away from direct sunlight and vents to get accurate readings.
Question 4: Which refrigerant is commonly used in modern residential HVAC systems?
- R-12
- R-22
- R-410A (Correct answer)
- Ammonia
Correct answer: R-410A
R-410A is widely used in residential systems due to its efficiency and lower environmental impact compared to older refrigerants like R-22.
Question 5: What is the function of the air filter in an HVAC system?
- Regulate humidity
- Distribute heat evenly
- Filter out airborne particles (Correct answer)
- Add scent to the air
Correct answer: Filter out airborne particles
Air filters trap dust, pollen, and other airborne particles to improve air quality and protect the system from damage.
Question 6: Why is it important to inspect ductwork in an HVAC system?
- To check refrigerant levels
- To locate the thermostat
- To detect leaks and inefficiencies (Correct answer)
- To replace wiring
Correct answer: To detect leaks and inefficiencies
Leaks or damage in ductwork can lead to energy loss, poor air quality, and uneven heating or cooling.
Question 7: How often should HVAC filters typically be changed?
- Every 6 months
- Once a year
- Every 1 to 3 months (Correct answer)
- Only when dirty
Correct answer: Every 1 to 3 months
Changing filters every 1 to 3 months helps maintain airflow and air quality and extends system life.
Question 8: What does SEER stand for in HVAC terminology?
- System Energy Evaluation Rating
- Seasonal Energy Efficiency Ratio (Correct answer)
- Standard Energy Efficiency Range
- Sustainable Equipment Efficiency Rating
Correct answer: Seasonal Energy Efficiency Ratio
SEER (Seasonal Energy Efficiency Ratio) measures the efficiency of an air conditioning system over a season.
Question 9: Which component of the HVAC system compresses refrigerant gas?
- Evaporator
- Expansion valve
- Compressor (Correct answer)
- Condenser coil
Correct answer: Compressor
The compressor is a vital part of the HVAC cycle that pressurizes refrigerant and helps move it through the system.
CHI Heating, Ventilation, & Air Conditioning (HVAC) Inspection 1
What is the purpose of the condensate drain in an HVAC system?