Questions And Correct Answers (Verified
Answers) Plus Rationales 2025/2026 Q&A |
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1. What is the primary purpose of an energy audit?
To identify opportunities to reduce energy consumption and improve
efficiency
An energy audit assesses a building’s energy use to find inefficiencies and
recommend cost-effective improvements.
2. Which device is commonly used to measure air leakage in a building?
Blower door test equipment
A blower door test pressurizes or depressurizes a building to identify air
leaks by measuring airflow required to maintain pressure.
3. What does the R-value of insulation indicate?
The resistance to heat flow through the insulation material
Higher R-values mean better insulating properties, reducing heat transfer
through the building envelope.
4. What is the standard temperature difference used in duct leakage testing?
25 Pascals (Pa)
, This pressure difference is standardized to assess duct system leakage
consistently.
5. What is the typical recommended attic insulation level in Florida?
R-30 to R-38
Florida’s warm climate requires moderate to high insulation to reduce
cooling loads and improve energy efficiency.
6. What is the function of a heat recovery ventilator (HRV)?
To exchange stale indoor air with fresh outdoor air while recovering heat
energy
HRVs reduce energy loss by transferring heat between outgoing and
incoming air streams, improving ventilation efficiency.
7. Which of the following is a renewable energy source?
Solar photovoltaic (PV) panels
Solar PV converts sunlight into electricity without depleting resources or
emitting greenhouse gases.
8. How is HVAC system efficiency commonly rated?
By SEER (Seasonal Energy Efficiency Ratio) for cooling systems
SEER measures cooling output per unit of electricity input over a typical
cooling season.
9. What type of light bulb uses the least energy for the same light output?
LED (Light Emitting Diode)
LEDs are more efficient, longer-lasting, and consume less electricity
compared to incandescent or CFL bulbs.
, 10.What is the main cause of heat gain through windows?
Solar radiation (solar heat gain)
Windows allow solar radiation to enter, increasing indoor temperatures,
especially in sunny climates.
11.Which method is used to reduce heat gain through windows?
Installing low-emissivity (low-E) coatings
Low-E coatings reflect infrared radiation, reducing solar heat gain while
allowing visible light to pass through.
12.What is the function of a programmable thermostat in energy savings?
To adjust temperature settings automatically based on schedule
Programmable thermostats reduce energy use by lowering HVAC
operation during unoccupied periods.
13.What does HVAC commissioning involve?
Testing and adjusting HVAC equipment to ensure it operates efficiently
Commissioning verifies system performance and identifies operational
issues for energy savings.
14.What building component typically accounts for the largest share of energy
loss?
Windows and doors
Because of air leakage and poor insulation, windows and doors are major
sources of heat loss or gain.
15.Which of the following actions can improve the energy efficiency of an
existing HVAC system?
Sealing duct leaks