Fixed #11522

core/src/mindustry/world/blocks/production/HeatCrafter.java

@@ -51,6 +51,11 @@ public class HeatCrafter extends GenericCrafter{
             super.updateTile();
         }
 
+        @Override
+        public boolean shouldConsume(){
+            return (heatRequirement <= 0f || heat > 0) && super.canConsume();
+        }
+
         @Override
         public float heatRequirement(){
             return heatRequirement;