diff --git a/ThermalDynamics/Data/Scripts/Thermodynamics/ThermalCell.cs b/ThermalDynamics/Data/Scripts/Thermodynamics/ThermalCell.cs
index 7297b0d..6533e63 100644
--- a/ThermalDynamics/Data/Scripts/Thermodynamics/ThermalCell.cs
+++ b/ThermalDynamics/Data/Scripts/Thermodynamics/ThermalCell.cs
@@ -484,7 +484,7 @@ private void HandleCriticalTemperature()
         {
             if (Settings.Instance.EnableDamage && Temperature > Definition.CriticalTemperature)
             {
-                Grid.CriticalBlocks++;
+                Grid.CurrentCriticalBlocks++;
                 Block.DoDamage((Temperature - Definition.CriticalTemperature) * Definition.CriticalTemperatureScaler, MyStringHash.GetOrCompute("thermal"), false);
             }
         }
diff --git a/ThermalDynamics/Data/Scripts/Thermodynamics/ThermalGrid.cs b/ThermalDynamics/Data/Scripts/Thermodynamics/ThermalGrid.cs
index 559646c..679144a 100644
--- a/ThermalDynamics/Data/Scripts/Thermodynamics/ThermalGrid.cs
+++ b/ThermalDynamics/Data/Scripts/Thermodynamics/ThermalGrid.cs
@@ -70,6 +70,7 @@ public partial class ThermalGrid : MyGameLogicComponent
         /// the number of blocks above the critical threshold
         /// </summary>
         public int CriticalBlocks = 0;
+        public int CurrentCriticalBlocks = 0;
 
         public long SurfaceUpdateFrame = 0;
 
@@ -457,7 +458,9 @@ public override void UpdateBeforeSimulation()
 
         private void PrepareNextSimulationStep()
         {
-            CriticalBlocks = 0;
+            CriticalBlocks = CurrentCriticalBlocks;
+            CurrentCriticalBlocks = 0;
+
             Vector3D position = Grid.PositionComp.WorldAABB.Center;
             PrepareSolarEnvironment(ref position);
             PrepareEnvironmentTemprature(ref position);