diff --git a/core/src/mindustry/entities/comp/BuildingComp.java b/core/src/mindustry/entities/comp/BuildingComp.java
index 9efa9120d2..820917bc4d 100644
--- a/core/src/mindustry/entities/comp/BuildingComp.java
+++ b/core/src/mindustry/entities/comp/BuildingComp.java
@@ -33,6 +33,7 @@ import mindustry.world.*;
 import mindustry.world.blocks.ConstructBlock.*;
 import mindustry.world.blocks.*;
 import mindustry.world.blocks.environment.*;
+import mindustry.world.blocks.heat.*;
 import mindustry.world.blocks.logic.LogicBlock.*;
 import mindustry.world.blocks.payloads.*;
 import mindustry.world.blocks.power.*;
@@ -40,6 +41,8 @@ import mindustry.world.consumers.*;
 import mindustry.world.meta.*;
 import mindustry.world.modules.*;
 
+import java.util.*;
+
 import static mindustry.Vars.*;
 
 @EntityDef(value = {Buildingc.class}, isFinal = false, genio = false, serialize = false)
@@ -281,6 +284,23 @@ abstract class BuildingComp implements Posc, Teamc, Healthc, Buildingc, Timerc,
         return true;
     }
 
+    public float calculateHeat(float[] sideHeat){
+        Arrays.fill(sideHeat, 0f);
+        float heat = 0f;
+
+        for(var edge : block.getEdges()){
+            Building build = nearby(edge.x, edge.y);
+            if(build != null && build.team == team && build instanceof HeatBlock heater && (!build.block.rotate || (relativeTo(build) + 2) % 4 == build.rotation)){
+                //heat is distributed across building size
+                float add = heater.heat() / build.block.size;
+
+                sideHeat[Mathf.mod(relativeTo(build), 4)] += add;
+                heat += add;
+            }
+        }
+        return heat;
+    }
+
     public void applyBoost(float intensity, float duration){
         //do not refresh time scale when getting a weaker intensity
         if(intensity >= this.timeScale - 0.001f){
diff --git a/core/src/mindustry/maps/planet/ErekirPlanetGenerator.java b/core/src/mindustry/maps/planet/ErekirPlanetGenerator.java
index 053620b7c9..5396510bf7 100644
--- a/core/src/mindustry/maps/planet/ErekirPlanetGenerator.java
+++ b/core/src/mindustry/maps/planet/ErekirPlanetGenerator.java
@@ -176,7 +176,7 @@ public class ErekirPlanetGenerator extends PlanetGenerator{
         tiles.getn(endX, endY).setOverlay(Blocks.spawn);
 
         //TODO tech is lazy and boring
-        tech(Blocks.darkPanel3, Blocks.darkPanel5, Blocks.darkMetal);
+        //tech(Blocks.darkPanel3, Blocks.darkPanel5, Blocks.darkMetal);
 
         //ores
         pass((x, y) -> {
@@ -234,7 +234,7 @@ public class ErekirPlanetGenerator extends PlanetGenerator{
             }
         }
 
-        decoration(0.015f);
+        decoration(0.017f);
 
         //not allowed
         state.rules.hiddenBuildItems.addAll(Items.copper, Items.titanium, Items.coal, Items.lead, Items.blastCompound, Items.pyratite, Items.sporePod, Items.metaglass, Items.plastanium);
diff --git a/core/src/mindustry/world/blocks/defense/turrets/Turret.java b/core/src/mindustry/world/blocks/defense/turrets/Turret.java
index fb47b45758..ad4cabb7aa 100644
--- a/core/src/mindustry/world/blocks/defense/turrets/Turret.java
+++ b/core/src/mindustry/world/blocks/defense/turrets/Turret.java
@@ -22,6 +22,7 @@ import mindustry.gen.*;
 import mindustry.graphics.*;
 import mindustry.logic.*;
 import mindustry.type.*;
+import mindustry.ui.*;
 import mindustry.world.blocks.*;
 import mindustry.world.draw.*;
 import mindustry.world.meta.*;
@@ -56,6 +57,8 @@ public class Turret extends ReloadTurret{
 
     public int maxAmmo = 30;
     public int ammoPerShot = 1;
+    public float heatRequirement = -1f;
+    public float maxHeatEfficiency = 3f;
 
     //TODO all the fields below should be deprecated and moved into a ShootPattern class or similar
     //TODO ...however, it would be nice to unify the weapon and turret systems into one.
@@ -143,6 +146,20 @@ public class Turret extends ReloadTurret{
         stats.add(Stat.targetsAir, targetAir);
         stats.add(Stat.targetsGround, targetGround);
         if(ammoPerShot != 1) stats.add(Stat.ammoUse, ammoPerShot, StatUnit.perShot);
+        if(heatRequirement > 0) stats.add(Stat.input, heatRequirement, StatUnit.heatUnits);
+    }
+
+    @Override
+    public void setBars(){
+        super.setBars();
+
+        if(heatRequirement > 0){
+            bars.add("heat", (TurretBuild entity) ->
+            new Bar(() ->
+            Core.bundle.format("bar.heatpercent", (int)entity.heatReq, (int)(Math.min(entity.heatReq / heatRequirement, maxHeatEfficiency) * 100)),
+            () -> Pal.lightOrange,
+            () -> entity.heatReq / heatRequirement));
+        }
     }
 
     @Override
@@ -194,6 +211,9 @@ public class Turret extends ReloadTurret{
         public BlockUnitc unit = (BlockUnitc)UnitTypes.block.create(team);
         public boolean wasShooting, charging;
 
+        public float heatReq;
+        public float[] sideHeat = new float[4];
+
         @Override
         public float warmup(){
             return shootWarmup;
@@ -324,6 +344,10 @@ public class Turret extends ReloadTurret{
                 logicControlTime -= Time.delta;
             }
 
+            if(heatRequirement > 0){
+                heatReq = calculateHeat(sideHeat);
+            }
+
             //turret always reloads regardless of whether it's targeting something
             updateReload();
 
@@ -403,6 +427,14 @@ public class Turret extends ReloadTurret{
             return !charging;
         }
 
+        @Override
+        public float efficiency(){
+            if(heatRequirement > 0){
+                return Math.min(heatReq / heatRequirement, maxHeatEfficiency) * super.efficiency();
+            }
+            return super.efficiency();
+        }
+
         /** Consume ammo and return a type. */
         public BulletType useAmmo(){
             if(cheating()) return peekAmmo();
diff --git a/core/src/mindustry/world/blocks/production/HeatCrafter.java b/core/src/mindustry/world/blocks/production/HeatCrafter.java
index e63cce35be..7ce4a20fd0 100644
--- a/core/src/mindustry/world/blocks/production/HeatCrafter.java
+++ b/core/src/mindustry/world/blocks/production/HeatCrafter.java
@@ -2,14 +2,10 @@ package mindustry.world.blocks.production;
 
 import arc.*;
 import arc.math.*;
-import mindustry.gen.*;
 import mindustry.graphics.*;
 import mindustry.ui.*;
-import mindustry.world.blocks.heat.*;
 import mindustry.world.meta.*;
 
-import java.util.*;
-
 /** A crafter that requires contact from heater blocks to craft. */
 public class HeatCrafter extends GenericCrafter{
     /** Base heat requirement for 100% efficiency. */
@@ -48,19 +44,8 @@ public class HeatCrafter extends GenericCrafter{
 
         @Override
         public void updateTile(){
-            Arrays.fill(sideHeat, 0f);
-            heat = 0f;
+            heat = calculateHeat(sideHeat);
 
-            for(var edge : getEdges()){
-                Building build = nearby(edge.x, edge.y);
-                if(build != null && build.team == team && build instanceof HeatBlock heater && (!build.block.rotate || (relativeTo(build) + 2) % 4 == build.rotation)){
-                    //heat is distributed across building size
-                    float add = heater.heat() / build.block.size;
-
-                    sideHeat[Mathf.mod(relativeTo(build), 4)] += add;
-                    heat += add;
-                }
-            }
             super.updateTile();
         }