ASCS EXAM QUESTIONS WITH
COMPLETE SOLUTIONS
Having sa sregular sHVAC sfilter sreplacement splan scan shelp:
A. sProtect sthe ssystem scomponents
B. sDouble sthe ssystem's sairflow
C. sHumidify sthe sairflow
D. sSanitize sthe ssystem scomponents s- scorrect sanswer s✔✔A. sProtect sthe ssystem
scomponents
According sto sACR, sthe sNADCA sStandard, sproperly sperformed sHVAC ssystem scleaning
sservices sshould:
A. sEliminate sall scontamination
B. sRestore sthe sinternal sinsulation sto san s"as snew" scondition
C. sRestore sthe sevaporator scoil sto sits soriginal spressure sdrop
D. sRender sthe ssystem svisibly sclean s- scorrect sanswer s✔✔C. sRestore sthe sevaporator
scoil sto sits soriginal spressure sdrop
Which sof sthe sfollowing screates sthe sgreatest srestriction sof sairflow?
A. sA sdirty sfan smotor
B. sA sdirty sPlenum
C. sA sdirty sCoil
D. sA sdirty sreturn sduct s- scorrect sanswer s✔✔C. sA sdirty scoil
According sto sACR, sThe sNADCA sStandard, sproper scleaning sand smaintenance sof san
sHVAC ssystem:
A. sEliminates sodors
B. sAdds sto sthe slife sexpectancy sof sa ssystem
C. sReduces snoice spollution s
D. sAdds sto sthe svalue sof sthe sHVAC ssystem s- scorrect sanswer s✔✔B. sAdds sto sthe slife
sexpectancy sof sa ssystem
During sa scommercial ssite ssurvey, san sASCS sshould sdo swhich sof sthe sfollowing sto
sdetermine sclient sexpectations?
A. sInterview sthe sclient's semployees
B. sAsk sthe sclient sa sseries sof sspecific squestions sprior sto sinspections
C. sPerform sthe sinspection swithout sinteraction swith sthe sclient
D. sConsult san sIndoor sEnvironment sProfessions s(IEP) sto sdetermine sIAQ s- scorrect
sanswer s✔✔B. sAsk sthe sclient sa sseries sof sspecific squestions sprior sto sinspections
Dirt sstreaks saround ssupply sdiffusers sthat sare sNOT scause sby sa sdirty sventilation ssystem
sare sMOST slikely scause sby:
A. sSlow sdischarge svelocities s
, B. sElevated srelative shumidity
C. sDirty sroom sair sat sthe sdiffuser
D. sThermal sstratification saround sthe sdiffuser s- scorrect sanswer s✔✔C. sDirty sroom sair sat
sthe sdiffuser
According sto sACR, sThe sNADCA sStandard, swhich sof sthe sfollowing sis sthe sPRIMARY
spurpose sof sa swritten swork splan?
A. sMinimizes spotential sfor slegal saction sagainst sthe scontractor
B. sAllows sa sclear sunderstanding sof swhat swork swill sbe sperformed
C. sEnsures scompliance swith scurrent sOccupational sSafety sand sHealth sAdministration
s(OSHA) sregulations
D. sDocuments sthe scomplete slist sof smaterials sto sbe sused son sthe sjob ssite s- scorrect
sanswer s✔✔B. sAllows sa sclear sunderstanding sof swhat swork swill sbe sperformed
A spackage sunit scontains swhich sof sthe sfollowing scomponents?
A. sCompressor, sevaporator scoil, scondenser, ssupply sfan, sand sfilter
B. sEvaporator scoil, sVAV sbox, scondenser, ssupply sfan, sexhaust sfan, sand sfilter
C. sCompressor, sevaporator scoil, scondenser, ssupply sfan, sexhaust sfan, sand sfilter
D. sCompressor, sevaporator scoil, scondenser, ssupply sfan, sthermostat, sand sfilter s-
scorrect sanswer s✔✔B. sEvaporator scoil, sVAV sbox, scondenser, ssupply sfan, sexhaust sfan,
sand sfilter
The smost scommon stypes sof sfuel sconsumed sin smodern sresidential sHVAC ssystems sare:
A. sNatural sGas, spropane, sand soil
B. sElectric, spropane, sand soil
C. sNatural sgas, smethane, sand soil
D. sNatural sgas, sPropane, sand sethanol s- scorrect sanswer s✔✔D. sNatural sgas, sPropane,
sand sethanol
In swhat ssequence sis san sHVAC ssystem stypically scleaned?
A. sSupply, sair shandler
B. sExhaust, sair shandler, sreturn, ssupply
C. sReturn, ssupply, sexhaust, sair shandler
D. sReturn, sair shandler, ssupply s- scorrect sanswer s✔✔B. sExhaust, sair shandler, sreturn,
ssupply
What stype sof ssupply sfan stransfers slarge svolumes sof sair swith sa sminimal swheel
sdiameter?
A. sBackward-inclined sfan
B. sForward-curved sfan
C. sAxial sfan
D. sRadial sFan s- scorrect sanswer s✔✔C. sAxial sfan
According sto sACR, sThe sNADCA sStandard, scoil scleaning sshould sbe sperformed:
A. sOn sthe supstream sside sonly
B. sOn sboth sthe supstream sand sdownstream ssides
COMPLETE SOLUTIONS
Having sa sregular sHVAC sfilter sreplacement splan scan shelp:
A. sProtect sthe ssystem scomponents
B. sDouble sthe ssystem's sairflow
C. sHumidify sthe sairflow
D. sSanitize sthe ssystem scomponents s- scorrect sanswer s✔✔A. sProtect sthe ssystem
scomponents
According sto sACR, sthe sNADCA sStandard, sproperly sperformed sHVAC ssystem scleaning
sservices sshould:
A. sEliminate sall scontamination
B. sRestore sthe sinternal sinsulation sto san s"as snew" scondition
C. sRestore sthe sevaporator scoil sto sits soriginal spressure sdrop
D. sRender sthe ssystem svisibly sclean s- scorrect sanswer s✔✔C. sRestore sthe sevaporator
scoil sto sits soriginal spressure sdrop
Which sof sthe sfollowing screates sthe sgreatest srestriction sof sairflow?
A. sA sdirty sfan smotor
B. sA sdirty sPlenum
C. sA sdirty sCoil
D. sA sdirty sreturn sduct s- scorrect sanswer s✔✔C. sA sdirty scoil
According sto sACR, sThe sNADCA sStandard, sproper scleaning sand smaintenance sof san
sHVAC ssystem:
A. sEliminates sodors
B. sAdds sto sthe slife sexpectancy sof sa ssystem
C. sReduces snoice spollution s
D. sAdds sto sthe svalue sof sthe sHVAC ssystem s- scorrect sanswer s✔✔B. sAdds sto sthe slife
sexpectancy sof sa ssystem
During sa scommercial ssite ssurvey, san sASCS sshould sdo swhich sof sthe sfollowing sto
sdetermine sclient sexpectations?
A. sInterview sthe sclient's semployees
B. sAsk sthe sclient sa sseries sof sspecific squestions sprior sto sinspections
C. sPerform sthe sinspection swithout sinteraction swith sthe sclient
D. sConsult san sIndoor sEnvironment sProfessions s(IEP) sto sdetermine sIAQ s- scorrect
sanswer s✔✔B. sAsk sthe sclient sa sseries sof sspecific squestions sprior sto sinspections
Dirt sstreaks saround ssupply sdiffusers sthat sare sNOT scause sby sa sdirty sventilation ssystem
sare sMOST slikely scause sby:
A. sSlow sdischarge svelocities s
, B. sElevated srelative shumidity
C. sDirty sroom sair sat sthe sdiffuser
D. sThermal sstratification saround sthe sdiffuser s- scorrect sanswer s✔✔C. sDirty sroom sair sat
sthe sdiffuser
According sto sACR, sThe sNADCA sStandard, swhich sof sthe sfollowing sis sthe sPRIMARY
spurpose sof sa swritten swork splan?
A. sMinimizes spotential sfor slegal saction sagainst sthe scontractor
B. sAllows sa sclear sunderstanding sof swhat swork swill sbe sperformed
C. sEnsures scompliance swith scurrent sOccupational sSafety sand sHealth sAdministration
s(OSHA) sregulations
D. sDocuments sthe scomplete slist sof smaterials sto sbe sused son sthe sjob ssite s- scorrect
sanswer s✔✔B. sAllows sa sclear sunderstanding sof swhat swork swill sbe sperformed
A spackage sunit scontains swhich sof sthe sfollowing scomponents?
A. sCompressor, sevaporator scoil, scondenser, ssupply sfan, sand sfilter
B. sEvaporator scoil, sVAV sbox, scondenser, ssupply sfan, sexhaust sfan, sand sfilter
C. sCompressor, sevaporator scoil, scondenser, ssupply sfan, sexhaust sfan, sand sfilter
D. sCompressor, sevaporator scoil, scondenser, ssupply sfan, sthermostat, sand sfilter s-
scorrect sanswer s✔✔B. sEvaporator scoil, sVAV sbox, scondenser, ssupply sfan, sexhaust sfan,
sand sfilter
The smost scommon stypes sof sfuel sconsumed sin smodern sresidential sHVAC ssystems sare:
A. sNatural sGas, spropane, sand soil
B. sElectric, spropane, sand soil
C. sNatural sgas, smethane, sand soil
D. sNatural sgas, sPropane, sand sethanol s- scorrect sanswer s✔✔D. sNatural sgas, sPropane,
sand sethanol
In swhat ssequence sis san sHVAC ssystem stypically scleaned?
A. sSupply, sair shandler
B. sExhaust, sair shandler, sreturn, ssupply
C. sReturn, ssupply, sexhaust, sair shandler
D. sReturn, sair shandler, ssupply s- scorrect sanswer s✔✔B. sExhaust, sair shandler, sreturn,
ssupply
What stype sof ssupply sfan stransfers slarge svolumes sof sair swith sa sminimal swheel
sdiameter?
A. sBackward-inclined sfan
B. sForward-curved sfan
C. sAxial sfan
D. sRadial sFan s- scorrect sanswer s✔✔C. sAxial sfan
According sto sACR, sThe sNADCA sStandard, scoil scleaning sshould sbe sperformed:
A. sOn sthe supstream sside sonly
B. sOn sboth sthe supstream sand sdownstream ssides
