diff --git a/Puffer/module.php b/Puffer/module.php
index ae128ad..7ee659f 100644
--- a/Puffer/module.php
+++ b/Puffer/module.php
@@ -26,7 +26,7 @@ class Puffer extends IPSModule
         $this->RegisterVariableInteger("Maximaltemperatur"," Berechnete Maximaltemperatur VT","",60);
         $this->RegisterVariableInteger("Boilertemperatur", "Boilertemperatur", "", 40);
         $this->RegisterVariableInteger("Aussentemperatur", "Aussentemperatur", "", 15);
-
+        $this->RegisterVariableBoolean("Hysterese", "","",false);
         
 
         // Variabeln für Kommunkation mit Manager
@@ -176,13 +176,23 @@ class Puffer extends IPSModule
         $boilerTemp = $this->GetValue("Boilertemperatur");
         $pufferLeistung = $this->ReadPropertyInteger("PufferLeistung");
 
-
+        $hyst = $this->GetValue("Hysterese");
         
+
+        if($VT < $boilerTemp){
+            $this->SetValue("Hysterese", false );
+        }elseif($VT-5 >= $boilerTemp){
+            $this->SetValue("Hysterese", true);
+        }
+
+
         if ($Peak) {
             $this->SetValue( "PowerSteps", json_encode([0]) );
         } else {
-            if ($boilerTemp < $VT) {
+            if ($boilerTemp < $VT && $hyst== true) {
                 $this->SetValue("PowerSteps", json_encode([$pufferLeistung]));    
+            } elseif ($boilerTemp > $VT - 5 && $hyst== false) {
+                $this->SetValue("PowerSteps", json_encode([0]));
             } else {
                 $this->SetValue("PowerSteps", json_encode([0]));
             }