HVAC EXAM 2 STUDY GUIDE QUESTIONS WITH CORRECT ANSWERS 2025

HVAC EXAM 2 STUDY GUIDE QUESTIONS
WITH CORRECT ANSWERS 2025
HowYdoYweYachieveYheatYtransferYinYbuildings?Y-YCORRECTYANSWERY-1.YEquipment

2.YComponents

3.YAccessoriesY

4.YDistribution



WhatYisYaYHVACYSystem?Y-YCORRECTYANSWERY-
AllYtheYitemsYneededYtoYmaintainYthermalYcomfortY&YSafetyYinYaYspaceYorYgroupYofYspaces



WhatYareYsomeYheatYtransferYequipmentYexamples?Y-YCORRECTYANSWERY-Boilers,YChillers,YCoils



WhatYareYsomeYcomponentYexamples?Y-YCORRECTYANSWERY-Fans,YPumps,YCompressors,YEvaporators



WhatYareYtheY2YdistributionYsystemYtypesYandYtheirYtransporterYmaterialsY?Y-YCORRECTYANSWERY-
DuctworkY(Air),YandYPipingY(water)



WhatYareYsomeYexamplesYofYaccessoriesY-YCORRECTYANSWERY-
TemperatureYcontrols,YValves,YDampers,YandYFitters



WhatYareYtheY2YprimaryYtypesYofYHVACYsystemsY-YCORRECTYANSWERY-LocalYHVACYSystemY-
Y1YbuildingYwithYmultipleYspaces




CentralYHVACYSystemY-YaYlargeYnumberYofYbuildingsY(CollegeYCampus)



WhatYareYtheYprimaryYtypesYofYheatYtransferYmediumsYforYAirYandYWater?Y(3YforYeach)Y-
YCORRECTYANSWERY-AirY-YusesYducts,Yfans,YandYcoils.YWaterY-Ypipes,Ypumps,Ychillers,YandYboilers




WhatYareYtheY3YtypesYofYsystemYclassifications?Y-YCORRECTYANSWERY-1.YAll-Air

2.YAll-Water

, 3.YAir-Water



WhatYareYtheY2YmainYindicatorsYthatYdescribeYairYsystemYtypesY-YCORRECTYANSWERY-
1.YAirYVolumeYandYTemperature

2.YNumberYofYHVACYZones



WhatYisYtheYpercentageYofYpeopleYyouYwantYtoYbeYcomfortableYinYaYspace?Y-YCORRECTYANSWERY-80%



WhatYisYtheYdifferenceYbetweenYaYHVACYsingleYZoneYandYMultiYzones?Y-YCORRECTYANSWERY-
SingleYzonesYhaveYoneYthermostatYthatYservesYoneYzoneY



MultiYzonesYhaveYoneYthermostatYthatYservesYmultipleYzones



WhatYareYtheY4YfactorsYweYzoneYbuildingsYoffYof?Y-YCORRECTYANSWERY-1.YExposure

2.YInternalYLoads

3.YApplication

4.YBudget



WhereYareYtheY3YpacesYyouYshouldYneverYplaceYaYthermostatY-YCORRECTYANSWERY-1.YOnYanYexteriorYwall

2.YInYaYpositionYthatYreceivesYdirectYsunlight

3.YAboveYheatYproducingYequipmentY(copier,Ykitchen,Yheaters,Yetc.)



WhatYareYtheYHVACYSelectionYFactorsY?Y-YCORRECTYANSWERY-1.YPreferenceYofYOwnerY

2.YBudget

3.YSizeY&YshapeYofYBuildingY

4.YFunctionYofYbuildingY

5.YArchitecturalYlimitationsY

5.YEaseYofYoperationY&YmaintenanceY

6.YTimeYavailableYforYconstruction