diff --git a/Geometry/HcalCommonData/interface/HcalDDDRecConstants.h b/Geometry/HcalCommonData/interface/HcalDDDRecConstants.h
index 1f4d3818a957a..1cd7a60e3b103 100644
--- a/Geometry/HcalCommonData/interface/HcalDDDRecConstants.h
+++ b/Geometry/HcalCommonData/interface/HcalDDDRecConstants.h
@@ -107,6 +107,7 @@ class HcalDDDRecConstants {
   int getTriggerMode() const { return (((hpar->topologyMode) >> 8) & 0xFF); }
   std::vector<HcalCellType> HcalCellTypes(HcalSubdetector) const;
   bool isBH() const { return hcons.isBH(); }
+  bool isHE() const { return hcons.isHE(); }
   bool isPlan1(const HcalDetId& id) const { return detIdSp_.find(id) != detIdSp_.end(); };
   int maxHFDepth(int ieta, int iphi) const { return hcons.maxHFDepth(ieta, iphi); }
   bool mergedDepthList29(int ieta, int iphi, int depth) const;
diff --git a/Geometry/HcalCommonData/interface/HcalDDDSimConstants.h b/Geometry/HcalCommonData/interface/HcalDDDSimConstants.h
index 84fdb83be9888..3d34e1a754919 100644
--- a/Geometry/HcalCommonData/interface/HcalDDDSimConstants.h
+++ b/Geometry/HcalCommonData/interface/HcalDDDSimConstants.h
@@ -62,6 +62,7 @@ class HcalDDDSimConstants {
   std::vector<HcalCellType> HcalCellTypes() const;
   std::vector<HcalCellType> HcalCellTypes(const HcalSubdetector&, int ieta = -1, int depth = -1) const;
   bool isBH() const { return isBH_; }
+  bool isHE() const { return (hpar->etaMax[1] > hpar->etaMin[1]); }
   const HcalLayerDepthMap* ldMap() const { return &ldmap_; }
   int maxHFDepth(const int& ieta, const int& iphi) const;
   unsigned int numberOfCells(const HcalSubdetector&) const;
diff --git a/SimG4CMS/Calo/interface/HCalSD.h b/SimG4CMS/Calo/interface/HCalSD.h
index a31c78158bd11..1fefbcbb26c72 100644
--- a/SimG4CMS/Calo/interface/HCalSD.h
+++ b/SimG4CMS/Calo/interface/HCalSD.h
@@ -97,6 +97,10 @@ class HCalSD : public CaloSD, public Observer<const BeginOfJob*> {
   std::unique_ptr<HFDarkening> m_HFDarkening;
   std::unique_ptr<HcalTestNS> m_HcalTestNS;
 
+  static constexpr double maxZ_ = 10000.0;
+  static constexpr double minRoff_ = -1500.0;
+  static constexpr double maxRoff_ = 450.0;
+  static constexpr double slopeHE_ = 0.4;
   bool isHF;
   bool agingFlagHB, agingFlagHE;
   bool useBirk, useLayerWt, useFibreBundle, usePMTHit;
diff --git a/SimG4CMS/Calo/src/HCalSD.cc b/SimG4CMS/Calo/src/HCalSD.cc
index f8c9abada8d3f..aff0d17fa2032 100644
--- a/SimG4CMS/Calo/src/HCalSD.cc
+++ b/SimG4CMS/Calo/src/HCalSD.cc
@@ -576,6 +576,21 @@ bool HCalSD::filterHit(CaloG4Hit* aHit, double time) {
 
 uint32_t HCalSD::setDetUnitId(int det, const G4ThreeVector& pos, int depth, int lay = 1) {
   uint32_t id = 0;
+  if (det == 0) {
+    if (std::abs(pos.z()) > maxZ_) {
+      det = 5;
+    } else if (!(hcalConstants_->isHE())) {
+      det = 3;
+    } else {
+      double minR = minRoff_ + slopeHE_ * std::abs(pos.z());
+      double maxR = maxRoff_ + slopeHE_ * std::abs(pos.z());
+      det = ((pos.perp() > minR) && (pos.perp() < maxR)) ? 4 : 3;
+    }
+#ifdef EDM_ML_DEBUG
+    edm::LogVerbatim("HcalSim") << "Position " << pos.perp() << ":" << std::abs(pos.z()) << " Limits "
+                                << !(hcalConstants_->isHE()) << ":" << maxZ_ << " det " << det;
+#endif
+  }
   if (numberingFromDDD.get()) {
     //get the ID's as eta, phi, depth, ... indices
     HcalNumberingFromDDD::HcalID tmp =