NEA Exam (City And Guilds Level 3 Energy
Awareness) 2026 Questions With 100% Verified
Solutions Examination Blueprint
SECTION 1: ENERGY USE IN THE HOME (Q1–Q8)
Q1: In a typical UK home, approximately what percentage of total energy consumption is
used for space heating?
A. 25-30%
B. 35-45%
C. 55-60% [CORRECT]
D. 70-75%
Correct Answer: C
Rationale: Correct because NEA/City & Guilds Level 3 curriculum states space heating
accounts for approximately 55-60% of domestic energy use in a typical UK home, making it
the largest single consumption category.
Q2: Which of the following domestic energy uses typically accounts for approximately 15-
20% of total household consumption?
A. Lighting
B. Water heating [CORRECT]
C. Cooking
D. Consumer electronics
Correct Answer: B
Rationale: Correct because water heating (including baths, showers, washing) represents the
second-largest energy use in UK homes at approximately 15-20%, after space heating.
Q3: A modern gas condensing boiler operates at an efficiency of approximately:
A. 70-75%
B. 80-85%
C. 90%+ [CORRECT]
D. 98-100%
, Correct Answer: C
Rationale: Correct because condensing boilers recover latent heat from flue gases, achieving
Seasonal Efficiency of Domestic Boilers in the UK (SEDBUK) ratings of A (90% and above), as
required by current Building Regulations.
Q4: Which heating system is most commonly found in off-gas grid rural properties in the UK?
A. District heating
B. Electric storage heaters or oil-fired boilers [CORRECT]
C. Ground source heat pumps
D. Biomass pellet boilers
Correct Answer: B
Rationale: Correct because off-gas grid properties typically rely on electric storage heaters
(using Economy 7/10 tariffs) or oil-fired boilers, as mains gas is unavailable and these are
established alternatives.
Q5: The primary purpose of a boiler interlock is to:
A. Prevent the boiler from overheating
B. Ensure the boiler and pump only operate when there is a demand for heat [CORRECT]
C. Lock the boiler controls to prevent tampering
D. Connect the boiler to the internet
Correct Answer: B
Rationale: Correct because boiler interlock is a wiring arrangement ensuring the boiler and
circulating pump cannot operate unless the room thermostat, cylinder thermostat, or
programmer calls for heat, preventing wasted energy.
Q6: Which of the following is NOT a typical control found on an electric storage heater?
A. Input control (charge control)
B. Output control (heat release)
C. Thermostatic radiator valve (TRV) [CORRECT]
D. Room thermostat
Correct Answer: C
Awareness) 2026 Questions With 100% Verified
Solutions Examination Blueprint
SECTION 1: ENERGY USE IN THE HOME (Q1–Q8)
Q1: In a typical UK home, approximately what percentage of total energy consumption is
used for space heating?
A. 25-30%
B. 35-45%
C. 55-60% [CORRECT]
D. 70-75%
Correct Answer: C
Rationale: Correct because NEA/City & Guilds Level 3 curriculum states space heating
accounts for approximately 55-60% of domestic energy use in a typical UK home, making it
the largest single consumption category.
Q2: Which of the following domestic energy uses typically accounts for approximately 15-
20% of total household consumption?
A. Lighting
B. Water heating [CORRECT]
C. Cooking
D. Consumer electronics
Correct Answer: B
Rationale: Correct because water heating (including baths, showers, washing) represents the
second-largest energy use in UK homes at approximately 15-20%, after space heating.
Q3: A modern gas condensing boiler operates at an efficiency of approximately:
A. 70-75%
B. 80-85%
C. 90%+ [CORRECT]
D. 98-100%
, Correct Answer: C
Rationale: Correct because condensing boilers recover latent heat from flue gases, achieving
Seasonal Efficiency of Domestic Boilers in the UK (SEDBUK) ratings of A (90% and above), as
required by current Building Regulations.
Q4: Which heating system is most commonly found in off-gas grid rural properties in the UK?
A. District heating
B. Electric storage heaters or oil-fired boilers [CORRECT]
C. Ground source heat pumps
D. Biomass pellet boilers
Correct Answer: B
Rationale: Correct because off-gas grid properties typically rely on electric storage heaters
(using Economy 7/10 tariffs) or oil-fired boilers, as mains gas is unavailable and these are
established alternatives.
Q5: The primary purpose of a boiler interlock is to:
A. Prevent the boiler from overheating
B. Ensure the boiler and pump only operate when there is a demand for heat [CORRECT]
C. Lock the boiler controls to prevent tampering
D. Connect the boiler to the internet
Correct Answer: B
Rationale: Correct because boiler interlock is a wiring arrangement ensuring the boiler and
circulating pump cannot operate unless the room thermostat, cylinder thermostat, or
programmer calls for heat, preventing wasted energy.
Q6: Which of the following is NOT a typical control found on an electric storage heater?
A. Input control (charge control)
B. Output control (heat release)
C. Thermostatic radiator valve (TRV) [CORRECT]
D. Room thermostat
Correct Answer: C
