CO ENERGY EFFICIENCY CONTRACTOR EXAM
QUESTIONS AND CORRECT NSWERS (VERIFIED
ANSWERS) Q&A 2027 |INSTANT DOWNLOAD PDF
1. Which factor has the greatest direct effect on the heating
load of a building?
A. Paint color of interior walls
B. Building envelope insulation and air leakage
C. Number of interior doors
D. Type of floor covering
Correct Answer: B. Building envelope insulation and air leakage
Rationale: Insulation and air leakage strongly influence heat
transfer between conditioned and unconditioned spaces.
2. What is the primary purpose of thermal insulation?
A. Increase air movement
B. Reduce heat transfer
C. Increase lighting levels
D. Increase electrical voltage
Correct Answer: B. Reduce heat transfer
Rationale: Insulation adds thermal resistance, reducing
conductive heat flow.
3. Which unit is commonly used to express thermal
resistance?
A. Volt
,B. Ampere
C. R-value
D. Watt-hour
Correct Answer: C. R-value
Rationale: R-value measures resistance to heat flow; higher
values generally indicate greater resistance.
4. What does a higher U-factor generally indicate?
A. Greater thermal resistance
B. Lower heat transfer
C. Greater heat transfer
D. Better insulation
Correct Answer: C. Greater heat transfer
Rationale: U-factor measures thermal conductance. Lower U-
factors generally indicate better insulating performance.
5. Which component is a major source of unwanted air
leakage?
A. Sealed vapor barrier
B. Gaps around windows and doors
C. Solid concrete slab
D. Insulated pipe
Correct Answer: B. Gaps around windows and doors
Rationale: Unsealed joints and openings can allow conditioned
air to escape and outdoor air to enter.
6. What is the primary purpose of weatherstripping?
A. Increase electrical resistance
,B. Reduce air leakage around movable components
C. Increase water pressure
D. Improve lighting efficiency
Correct Answer: B. Reduce air leakage around movable
components
Rationale: Weatherstripping seals gaps around doors and
operable windows.
7. Which lighting technology generally provides high efficiency
and long service life?
A. Incandescent lamp
B. LED
C. Carbon arc lamp
D. Halogen-only lamp
Correct Answer: B. LED
Rationale: LEDs typically use less electricity and have longer
operating lives than conventional incandescent lamps.
8. What does HVAC stand for?
A. Heat Voltage and Air Control
B. Heating, Ventilation, and Air Conditioning
C. High-Volume Air Circulation
D. Heat Valve Adjustment Control
Correct Answer: B. Heating, Ventilation, and Air Conditioning
Rationale: HVAC describes systems used to heat, ventilate, and
condition indoor spaces.
, 9. What is the purpose of an energy audit?
A. Determine property ownership
B. Identify energy-use patterns and efficiency opportunities
C. Increase utility rates
D. Replace all electrical equipment automatically
Correct Answer: B. Identify energy-use patterns and efficiency
opportunities
Rationale: Energy audits evaluate how energy is used and
identify opportunities for reducing consumption.
10. Which instrument is commonly used to measure
temperature?
A. Manometer
B. Thermometer
C. Wattmeter
D. Anemometer
Correct Answer: B. Thermometer
Rationale: A thermometer measures temperature.
11. What does a watt measure?
A. Electrical power
B. Electrical resistance only
C. Temperature
D. Pressure
Correct Answer: A. Electrical power
Rationale: The watt is the SI unit of power and indicates the
rate of energy use or transfer.
QUESTIONS AND CORRECT NSWERS (VERIFIED
ANSWERS) Q&A 2027 |INSTANT DOWNLOAD PDF
1. Which factor has the greatest direct effect on the heating
load of a building?
A. Paint color of interior walls
B. Building envelope insulation and air leakage
C. Number of interior doors
D. Type of floor covering
Correct Answer: B. Building envelope insulation and air leakage
Rationale: Insulation and air leakage strongly influence heat
transfer between conditioned and unconditioned spaces.
2. What is the primary purpose of thermal insulation?
A. Increase air movement
B. Reduce heat transfer
C. Increase lighting levels
D. Increase electrical voltage
Correct Answer: B. Reduce heat transfer
Rationale: Insulation adds thermal resistance, reducing
conductive heat flow.
3. Which unit is commonly used to express thermal
resistance?
A. Volt
,B. Ampere
C. R-value
D. Watt-hour
Correct Answer: C. R-value
Rationale: R-value measures resistance to heat flow; higher
values generally indicate greater resistance.
4. What does a higher U-factor generally indicate?
A. Greater thermal resistance
B. Lower heat transfer
C. Greater heat transfer
D. Better insulation
Correct Answer: C. Greater heat transfer
Rationale: U-factor measures thermal conductance. Lower U-
factors generally indicate better insulating performance.
5. Which component is a major source of unwanted air
leakage?
A. Sealed vapor barrier
B. Gaps around windows and doors
C. Solid concrete slab
D. Insulated pipe
Correct Answer: B. Gaps around windows and doors
Rationale: Unsealed joints and openings can allow conditioned
air to escape and outdoor air to enter.
6. What is the primary purpose of weatherstripping?
A. Increase electrical resistance
,B. Reduce air leakage around movable components
C. Increase water pressure
D. Improve lighting efficiency
Correct Answer: B. Reduce air leakage around movable
components
Rationale: Weatherstripping seals gaps around doors and
operable windows.
7. Which lighting technology generally provides high efficiency
and long service life?
A. Incandescent lamp
B. LED
C. Carbon arc lamp
D. Halogen-only lamp
Correct Answer: B. LED
Rationale: LEDs typically use less electricity and have longer
operating lives than conventional incandescent lamps.
8. What does HVAC stand for?
A. Heat Voltage and Air Control
B. Heating, Ventilation, and Air Conditioning
C. High-Volume Air Circulation
D. Heat Valve Adjustment Control
Correct Answer: B. Heating, Ventilation, and Air Conditioning
Rationale: HVAC describes systems used to heat, ventilate, and
condition indoor spaces.
, 9. What is the purpose of an energy audit?
A. Determine property ownership
B. Identify energy-use patterns and efficiency opportunities
C. Increase utility rates
D. Replace all electrical equipment automatically
Correct Answer: B. Identify energy-use patterns and efficiency
opportunities
Rationale: Energy audits evaluate how energy is used and
identify opportunities for reducing consumption.
10. Which instrument is commonly used to measure
temperature?
A. Manometer
B. Thermometer
C. Wattmeter
D. Anemometer
Correct Answer: B. Thermometer
Rationale: A thermometer measures temperature.
11. What does a watt measure?
A. Electrical power
B. Electrical resistance only
C. Temperature
D. Pressure
Correct Answer: A. Electrical power
Rationale: The watt is the SI unit of power and indicates the
rate of energy use or transfer.
