diff --git a/src/EnergyPlus/SimulationManager.hh b/src/EnergyPlus/SimulationManager.hh
index b483d230c51..e39446e60fb 100644
--- a/src/EnergyPlus/SimulationManager.hh
+++ b/src/EnergyPlus/SimulationManager.hh
@@ -117,7 +117,7 @@ struct SimulationManagerData : BaseGlobalStruct
 void Resimulate(EnergyPlusData &state,
                 bool const ResimExt, // Flag to resimulate the exterior energy use simulation
                 bool const ResimHB,  // Flag to resimulate the heat balance simulation (including HVAC)
-                bool &ResimHVAC // Flag to resimulate the HVAC simulation
+                bool &ResimHVAC      // Flag to resimulate the HVAC simulation
 );
 
 } // namespace EnergyPlus
diff --git a/src/EnergyPlus/SingleDuct.cc b/src/EnergyPlus/SingleDuct.cc
index e11a6eaf949..14cbe633149 100644
--- a/src/EnergyPlus/SingleDuct.cc
+++ b/src/EnergyPlus/SingleDuct.cc
@@ -5998,34 +5998,6 @@ void GetATMixer(EnergyPlusData &state,
     }
 }
 
-void SetATMixerPriFlow(EnergyPlusData &state,
-                       int const ATMixerNum,                                // Air terminal mixer index
-                       ObjexxFCL::Optional<Real64 const> PriAirMassFlowRate // Air terminal mixer primary air mass flow rate [kg/s]
-)
-{
-
-    // SUBROUTINE INFORMATION:
-    //       AUTHOR         Fred Buhl
-    //       DATE WRITTEN   April 2012
-
-    // PURPOSE OF THIS SUBROUTINE:
-    // This Subroutine sets the primary air mass flow rate on the primary air inlet
-    // node of a terminal unit mixer component.
-
-    // METHODOLOGY EMPLOYED:
-    // The flow is set to either the input PriAirMassFlowRate if this optional input
-    // parameter is present, or to the maximum available mass flow rate of the primary
-    // air inlet node.
-
-    if (ATMixerNum <= 0) return;
-    int const PriAirNode = state.dataSingleDuct->SysATMixer(ATMixerNum).PriInNode; // air terminal mixer primary air inlet node number
-    if (present(PriAirMassFlowRate)) {
-        state.dataLoopNodes->Node(PriAirNode).MassFlowRate = PriAirMassFlowRate;
-    } else {
-        state.dataLoopNodes->Node(PriAirNode).MassFlowRate = state.dataLoopNodes->Node(PriAirNode).MassFlowRateMaxAvail;
-    }
-}
-
 void setATMixerSizingProperties(EnergyPlusData &state,
                                 int const inletATMixerIndex, // index to ATMixer at inlet of zone equipment
                                 int const controlledZoneNum, // controlled zone number
diff --git a/src/EnergyPlus/SingleDuct.hh b/src/EnergyPlus/SingleDuct.hh
index 406a7d00708..1110c5ac2aa 100644
--- a/src/EnergyPlus/SingleDuct.hh
+++ b/src/EnergyPlus/SingleDuct.hh
@@ -343,11 +343,6 @@ namespace SingleDuct {
                     int ZoneEquipOutletNode           // zone equipment outlet node (used with inlet side mixers)
     );
 
-    void SetATMixerPriFlow(EnergyPlusData &state,
-                           int ATMixerNum,                                          // Air terminal mixer index
-                           ObjexxFCL::Optional<Real64 const> PriAirMassFlowRate = _ // Air terminal mixer primary air mass flow rate [kg/s]
-    );
-
     void setATMixerSizingProperties(EnergyPlusData &state,
                                     int inletATMixerIndex, // index to ATMixer at inlet of zone equipment
                                     int controlledZoneNum, // controlled zone number
diff --git a/src/EnergyPlus/SizingAnalysisObjects.cc b/src/EnergyPlus/SizingAnalysisObjects.cc
index 86857cdd323..8bfed4b4a09 100644
--- a/src/EnergyPlus/SizingAnalysisObjects.cc
+++ b/src/EnergyPlus/SizingAnalysisObjects.cc
@@ -278,10 +278,7 @@ Real64 SizingLog::GetLogVariableDataAtTimestamp(ZoneTimestepObject tmpztStepStam
 void SizingLog::ReInitLogForIteration()
 {
     ZoneTimestepObject tmpNullztStepObj;
-
-    for (auto &zt : ztStepObj) {
-        zt = tmpNullztStepObj;
-    }
+    std::fill(ztStepObj.begin(), ztStepObj.end(), tmpNullztStepObj);
 }
 
 void SizingLog::SetupNewEnvironment(int const seedEnvrnNum, int const newEnvrnNum)
@@ -291,8 +288,7 @@ void SizingLog::SetupNewEnvironment(int const seedEnvrnNum, int const newEnvrnNu
 
 int SizingLoggerFramework::SetupVariableSizingLog(EnergyPlusData &state, Real64 &rVariable, int stepsInAverage)
 {
-    int VectorLength(0);
-    int constexpr HoursPerDay(24);
+    int constexpr HoursPerDay = 24;
 
     SizingLog tmpLog(rVariable);
     tmpLog.NumOfEnvironmentsInLogSet = 0;
@@ -333,7 +329,7 @@ int SizingLoggerFramework::SetupVariableSizingLog(EnergyPlusData &state, Real64
 
     tmpLog.timeStepsInAverage = stepsInAverage;
 
-    VectorLength = stepSum;
+    int VectorLength = stepSum;
 
     tmpLog.NumOfStepsInLogSet = VectorLength;
     tmpLog.ztStepObj.resize(VectorLength);