NEA Exam (City and Guilds Level 3 Energy Awareness) QUESTION
x x x x x x x x x
S WITH COMPLETE VERIFIED SOLUTIONS 2024/2025
x x x x x
LIHICx-xAnswerx-xLowxIncomexHighxCostsxIndicator
Axhouseholdxisxconsideredxfuelxpoorxwhen?x-xAnswerx-
xIfxtheyxhavexabovexaveragexfuelxcostsxandxtheyxneedxtoxspendxmorexthanx10%xofxhousehol
dxincomextoxachievexaxsatisfactoryxheatingxregime.
Safe/xaveragexhousextemperature?x-xAnswerx-
x21xdegreesxinxlivingxroomxandx18xdegreesxinxotherxrooms
3xcausesxofxfuelxpovertyx-xAnswerx-xhighxfuelxcosts,xlowxincome,xenergyxinefficientxhomes
3xwaysxtoxtacklexfuelxpovertyx-xAnswerx-
ximprovexenergyxefficiency,xmaximisexincome,xenergyxadvice
DegreesxCxtoxdegreesxFx-xAnswerx-xCxxx1.8x+x32
DegreesxFxtoxdegreesxCx-xAnswerx-xF-32/1.8
Percentagexofxaveragexhouseholdxspacexheatingxenergyxusex-xAnswerx-x65.5
Percentagexofxaveragexhouseholdxwaterxheatingxenergyxusex-xAnswerx-x17
Percentagexofxaveragexhouseholdxlightingxandxappliancesxenergyxusex-xAnswerx-x15
Percentagexofxaveragexhouseholdxcookingxenergyxusex-xAnswerx-x2.5
Radiantxheatx-xAnswerx-xTravelsxinxstraightxlinesxe.g.xhowxsunlightxtravels
Convectionxheatx-xAnswerx-
xapplicablextoxairxandxwater,xwherexheatxmovesxfromxaxwarmxspotxtoxaxcolderxspot,xheatedx
moleculesxbecomexlighterxandxrise,xdisplacingxcoolerxandxheavierxparticlesxwhichxfall.
ConductionxHeatx-xAnswerx-
xmovementxofxheatxthroughxaxmaterial,xrelevantxtoxthexchoicexofxmaterialsxusedxinxhousingx
construction
ElectricxFanxHeaterxcontrolsx-xAnswerx-xon/off,xThermostat,xfanxspeed,xheatxsetting
Electricxconvectorxheaterxcontrolsx-xAnswerx-xon/off,xthermostat,xtimer
electricxstoragexheaterxcontrolsx-xAnswerx-xinput/charge,xoutput/boost,xon/off.xtimer
,Fanxassistedxstoragexheater/quantumxstoragexheaterx-xAnswerx-
xon/off,xthermostat,xheatxsettings,xtimer
electricxradiantxfire/xbarxfirex-xAnswerx-xon/off,xthermostat,xheatxsettings,xtimer
electricxinfra-redxheater/xhalogenxheaterx-xAnswerx-xon/off,xthermostat,xheatxsettings,xtimer
electricxoilxfilledxradiatorx-xAnswerx-xon/off,xthermostat,xheatxsettings,xtimer
Openxfrontedxgasxradiant/xconvectorxfirex(gasxfiredxcouldxhavexbackxboilerxbehind)x-
xAnswerx-xIgnition,xtempxsetting,xboilerxthermostatxifxtherexisxaxbackxboiler
Gasxdecorativexeffectxfire,xopenxandxclosexfrontedx-xAnswerx-xIgnition,xtempxsetting
Gasxconvectorxheater/xwallxheatersx(roomxsealed)x-xAnswerx-xIgnition,xtempxsetting
Closedxsolidxroomxheaterx-xAnswerx-
xDamperxtoxcontrolxairxflow,xboilerxthermostatxifxtherexisxaxbackxboiler
Bottlexgasxheaterx(portable,xliquidxpetroleumxgasxLPG)x-xAnswerx-xignition,xtempxsetting
4xmainxsafetyxissuesxwhenxusingxaxfuelxburningxappliancex-xAnswerx-x-
xCarbonxmonoxidexpoisoningxandxfires
-xFitxaxsmokexalarm,xtestxeveryxmonthxandxreplacexafterx10xyears
-xNeverxleavexcandles,xcigarettesxunattended
-xEnsurextherexisxgoodxventilation
HowxoftenxarexlandlordsxrequiredxtoxcarryxoutxaxsafetyxcheckxwithxaxGasxSafexregisteredxen
gineer?x-xAnswerx-xEveryx12xmonths
Warmxairxheatingxsystemx-xAnswerx-x-xdistributesxwarmxairxaroundxthexhome
-xAirxisxheatedxbyxaxcentralxunitxusingxgas,xoilxorxelectricity
-xDistributedxusingxductsxandxaxfanxtoxdrivexoutxthexwarmxairxintoxrooms.
-xHeatxisxemittedxviaxgrillesxonxthexfloorxorxatxthexbottomxofxthexwalls
-xThermostatxandxtimingxcontrols
Wetxcentralxheatingxsystemsx-xAnswerx-x-
xHotxwaterxisxcirculatedxaroundxthexhomexviaxradiatorsxandxpipes.
-
xSourcexofxhotxwaterxisxthexboilerxwhichxheatsxupxwaterxusingxfuelsxsuchxasxnaturalxgas,xoil,x
LPGxorxsolidxfuel
-xGivesxoutxheatxviaxconvection
Conventionalxboiler/systemxboilerx-xAnswerx-
xHotxwaterxinxcylinderxisxheatedxindirectlyxviaxaxheatxexchangerxwithinxthexcylinder.xCanxbexf
, uelledxbyxnaturalxgas,xLPGxorxoil.xCanxbexcondensingxorxnon-
condensing.xHotxwaterxstoredxinxthexcylinder.
Combinationxboilerx-xAnswerx-
xExtraxheatxexchangerxwithinxthexboilerxallowsxitxtoxheatxupxwaterxquicker.xHouseholdersxon
lyxpayxforxthexhotxwaterxtheyxuse.xProducexhotxwaterxforxbothxspacexandxwaterxheatingxsyst
ems.xFuelledxbyxnaturalxgas,xLPGxorxoil.xCanxbexcondensingxorxnon-
condensing.xDoesn'txneedxaxhotxwaterxcylinder.
Soildxfuelxroomxheaterxwithxbackxboilerx-xAnswerx-
xSituatedxinxfireplacexinxorderxtoxusexexistingxflue.xHotxwaterxisxheatedxbyxburningxsolidxfuelxi
nxthexgrate.xTypexofxconventionalxboiler.x4xmainxtypes:xopenxfirexwithxbackxboiler,xclosedxro
omxheaterxwithxbackxboiler,xfreexstandingxmanuallyxfedxboiler,xfreexstandingxautomaticallyxf
edxboiler.
Gasxbackxboilerx-xAnswerx-
xSituatedxinxaxfireplacextoxusexthexexistingxflue.xWaterxisxinxaxmetalxcontainerxwhichxisxheate
dxbyxburningxgas.xTypexofxconventionalxboiler.
CondensingxBoilerx-xAnswerx-
xHasxaxlargexheatxexchangerxorxtwoxheatxexchangersxwhichxcapturexthexheatxfromxfluexgas
esxandxreusesxit.xCanxbexaxconventionalxboilerxorxcombinationxboiler.xMorexefficientxasxthey
xextractxmorexheatxthanxnon-condensingxmodels.
Biomassxboilerx-xAnswerx-
xDomesticxhotxwaterxheatedxviaxaxheatxexchangerxinxaxcylinder.xBoilerxisxfuelledxusingxwood
xpellets.
Whatxisxaxfluex-xAnswerx-
xFluexremovesxthexproductsxofxcombustionxthatxresultxfromxburningxfossilxfuels
Openxfluex-xAnswerx-
xAirxisxsuckedxfromxroomxthenxdispersedxoutxexistingxchimneyxthatxhasxbeenxmodified.xUsu
allyxusedxforxbackxboilersxwithxclosed/openxfirexinxfront.
Balancedxfluex-xAnswerx-xUsedxwithxgasxfires,xwaterxheatersxwhichxarexonxanxexternalxwall.
Balancedxfluex-xnaturalxdraughtx-xAnswerx-
xappliancexisxsealedxoffxfromxthexroom,xgassesxarexsuckedxinxfromxoutsidexthroughxonexpip
exandxemittedxthroughxanother
Balancedxfluex-xfanxassistedx-xAnswerx-
xImprovesxefficiencyxofxaxboiler.xBoilerxdoesxnotxneedxtoxbexfittedxonxanxexternalxwall.xRatex
ofxgassesxbeingxsuckedxin/emittedxisxregulatedxbyxaxfan.xFanxcanxpropel/suckxgasesxfromxf
urtherxaway.
x x x x x x x x x
S WITH COMPLETE VERIFIED SOLUTIONS 2024/2025
x x x x x
LIHICx-xAnswerx-xLowxIncomexHighxCostsxIndicator
Axhouseholdxisxconsideredxfuelxpoorxwhen?x-xAnswerx-
xIfxtheyxhavexabovexaveragexfuelxcostsxandxtheyxneedxtoxspendxmorexthanx10%xofxhousehol
dxincomextoxachievexaxsatisfactoryxheatingxregime.
Safe/xaveragexhousextemperature?x-xAnswerx-
x21xdegreesxinxlivingxroomxandx18xdegreesxinxotherxrooms
3xcausesxofxfuelxpovertyx-xAnswerx-xhighxfuelxcosts,xlowxincome,xenergyxinefficientxhomes
3xwaysxtoxtacklexfuelxpovertyx-xAnswerx-
ximprovexenergyxefficiency,xmaximisexincome,xenergyxadvice
DegreesxCxtoxdegreesxFx-xAnswerx-xCxxx1.8x+x32
DegreesxFxtoxdegreesxCx-xAnswerx-xF-32/1.8
Percentagexofxaveragexhouseholdxspacexheatingxenergyxusex-xAnswerx-x65.5
Percentagexofxaveragexhouseholdxwaterxheatingxenergyxusex-xAnswerx-x17
Percentagexofxaveragexhouseholdxlightingxandxappliancesxenergyxusex-xAnswerx-x15
Percentagexofxaveragexhouseholdxcookingxenergyxusex-xAnswerx-x2.5
Radiantxheatx-xAnswerx-xTravelsxinxstraightxlinesxe.g.xhowxsunlightxtravels
Convectionxheatx-xAnswerx-
xapplicablextoxairxandxwater,xwherexheatxmovesxfromxaxwarmxspotxtoxaxcolderxspot,xheatedx
moleculesxbecomexlighterxandxrise,xdisplacingxcoolerxandxheavierxparticlesxwhichxfall.
ConductionxHeatx-xAnswerx-
xmovementxofxheatxthroughxaxmaterial,xrelevantxtoxthexchoicexofxmaterialsxusedxinxhousingx
construction
ElectricxFanxHeaterxcontrolsx-xAnswerx-xon/off,xThermostat,xfanxspeed,xheatxsetting
Electricxconvectorxheaterxcontrolsx-xAnswerx-xon/off,xthermostat,xtimer
electricxstoragexheaterxcontrolsx-xAnswerx-xinput/charge,xoutput/boost,xon/off.xtimer
,Fanxassistedxstoragexheater/quantumxstoragexheaterx-xAnswerx-
xon/off,xthermostat,xheatxsettings,xtimer
electricxradiantxfire/xbarxfirex-xAnswerx-xon/off,xthermostat,xheatxsettings,xtimer
electricxinfra-redxheater/xhalogenxheaterx-xAnswerx-xon/off,xthermostat,xheatxsettings,xtimer
electricxoilxfilledxradiatorx-xAnswerx-xon/off,xthermostat,xheatxsettings,xtimer
Openxfrontedxgasxradiant/xconvectorxfirex(gasxfiredxcouldxhavexbackxboilerxbehind)x-
xAnswerx-xIgnition,xtempxsetting,xboilerxthermostatxifxtherexisxaxbackxboiler
Gasxdecorativexeffectxfire,xopenxandxclosexfrontedx-xAnswerx-xIgnition,xtempxsetting
Gasxconvectorxheater/xwallxheatersx(roomxsealed)x-xAnswerx-xIgnition,xtempxsetting
Closedxsolidxroomxheaterx-xAnswerx-
xDamperxtoxcontrolxairxflow,xboilerxthermostatxifxtherexisxaxbackxboiler
Bottlexgasxheaterx(portable,xliquidxpetroleumxgasxLPG)x-xAnswerx-xignition,xtempxsetting
4xmainxsafetyxissuesxwhenxusingxaxfuelxburningxappliancex-xAnswerx-x-
xCarbonxmonoxidexpoisoningxandxfires
-xFitxaxsmokexalarm,xtestxeveryxmonthxandxreplacexafterx10xyears
-xNeverxleavexcandles,xcigarettesxunattended
-xEnsurextherexisxgoodxventilation
HowxoftenxarexlandlordsxrequiredxtoxcarryxoutxaxsafetyxcheckxwithxaxGasxSafexregisteredxen
gineer?x-xAnswerx-xEveryx12xmonths
Warmxairxheatingxsystemx-xAnswerx-x-xdistributesxwarmxairxaroundxthexhome
-xAirxisxheatedxbyxaxcentralxunitxusingxgas,xoilxorxelectricity
-xDistributedxusingxductsxandxaxfanxtoxdrivexoutxthexwarmxairxintoxrooms.
-xHeatxisxemittedxviaxgrillesxonxthexfloorxorxatxthexbottomxofxthexwalls
-xThermostatxandxtimingxcontrols
Wetxcentralxheatingxsystemsx-xAnswerx-x-
xHotxwaterxisxcirculatedxaroundxthexhomexviaxradiatorsxandxpipes.
-
xSourcexofxhotxwaterxisxthexboilerxwhichxheatsxupxwaterxusingxfuelsxsuchxasxnaturalxgas,xoil,x
LPGxorxsolidxfuel
-xGivesxoutxheatxviaxconvection
Conventionalxboiler/systemxboilerx-xAnswerx-
xHotxwaterxinxcylinderxisxheatedxindirectlyxviaxaxheatxexchangerxwithinxthexcylinder.xCanxbexf
, uelledxbyxnaturalxgas,xLPGxorxoil.xCanxbexcondensingxorxnon-
condensing.xHotxwaterxstoredxinxthexcylinder.
Combinationxboilerx-xAnswerx-
xExtraxheatxexchangerxwithinxthexboilerxallowsxitxtoxheatxupxwaterxquicker.xHouseholdersxon
lyxpayxforxthexhotxwaterxtheyxuse.xProducexhotxwaterxforxbothxspacexandxwaterxheatingxsyst
ems.xFuelledxbyxnaturalxgas,xLPGxorxoil.xCanxbexcondensingxorxnon-
condensing.xDoesn'txneedxaxhotxwaterxcylinder.
Soildxfuelxroomxheaterxwithxbackxboilerx-xAnswerx-
xSituatedxinxfireplacexinxorderxtoxusexexistingxflue.xHotxwaterxisxheatedxbyxburningxsolidxfuelxi
nxthexgrate.xTypexofxconventionalxboiler.x4xmainxtypes:xopenxfirexwithxbackxboiler,xclosedxro
omxheaterxwithxbackxboiler,xfreexstandingxmanuallyxfedxboiler,xfreexstandingxautomaticallyxf
edxboiler.
Gasxbackxboilerx-xAnswerx-
xSituatedxinxaxfireplacextoxusexthexexistingxflue.xWaterxisxinxaxmetalxcontainerxwhichxisxheate
dxbyxburningxgas.xTypexofxconventionalxboiler.
CondensingxBoilerx-xAnswerx-
xHasxaxlargexheatxexchangerxorxtwoxheatxexchangersxwhichxcapturexthexheatxfromxfluexgas
esxandxreusesxit.xCanxbexaxconventionalxboilerxorxcombinationxboiler.xMorexefficientxasxthey
xextractxmorexheatxthanxnon-condensingxmodels.
Biomassxboilerx-xAnswerx-
xDomesticxhotxwaterxheatedxviaxaxheatxexchangerxinxaxcylinder.xBoilerxisxfuelledxusingxwood
xpellets.
Whatxisxaxfluex-xAnswerx-
xFluexremovesxthexproductsxofxcombustionxthatxresultxfromxburningxfossilxfuels
Openxfluex-xAnswerx-
xAirxisxsuckedxfromxroomxthenxdispersedxoutxexistingxchimneyxthatxhasxbeenxmodified.xUsu
allyxusedxforxbackxboilersxwithxclosed/openxfirexinxfront.
Balancedxfluex-xAnswerx-xUsedxwithxgasxfires,xwaterxheatersxwhichxarexonxanxexternalxwall.
Balancedxfluex-xnaturalxdraughtx-xAnswerx-
xappliancexisxsealedxoffxfromxthexroom,xgassesxarexsuckedxinxfromxoutsidexthroughxonexpip
exandxemittedxthroughxanother
Balancedxfluex-xfanxassistedx-xAnswerx-
xImprovesxefficiencyxofxaxboiler.xBoilerxdoesxnotxneedxtoxbexfittedxonxanxexternalxwall.xRatex
ofxgassesxbeingxsuckedxin/emittedxisxregulatedxbyxaxfan.xFanxcanxpropel/suckxgasesxfromxf
urtherxaway.
