diff --git a/src/main/java/de/ellpeck/naturesaura/blocks/tiles/TileEntityAuraDetector.java b/src/main/java/de/ellpeck/naturesaura/blocks/tiles/TileEntityAuraDetector.java
index 6eb122b9..7206b520 100644
--- a/src/main/java/de/ellpeck/naturesaura/blocks/tiles/TileEntityAuraDetector.java
+++ b/src/main/java/de/ellpeck/naturesaura/blocks/tiles/TileEntityAuraDetector.java
@@ -11,7 +11,7 @@ public class TileEntityAuraDetector extends TileEntityImpl implements ITickable
     @Override
     public void update() {
         if (!this.world.isRemote && this.world.getTotalWorldTime() % 80 == 0) {
-            int amount = IAuraChunk.getAuraInArea(this.world, this.pos, 8);
+            int amount = IAuraChunk.getAuraInArea(this.world, this.pos, 30);
             int power = MathHelper.clamp(MathHelper.ceil(amount / (IAuraChunk.DEFAULT_AURA * 2F) * 15F), 0, 15);
             if (this.redstonePower != power) {
                 this.redstonePower = power;
diff --git a/src/main/java/de/ellpeck/naturesaura/blocks/tiles/TileEntityFurnaceHeater.java b/src/main/java/de/ellpeck/naturesaura/blocks/tiles/TileEntityFurnaceHeater.java
index 9416ad88..c67e9df8 100644
--- a/src/main/java/de/ellpeck/naturesaura/blocks/tiles/TileEntityFurnaceHeater.java
+++ b/src/main/java/de/ellpeck/naturesaura/blocks/tiles/TileEntityFurnaceHeater.java
@@ -39,7 +39,7 @@ public class TileEntityFurnaceHeater extends TileEntityImpl implements ITickable
                     //if set higher than 199, it'll never finish because the furnace does ++ and then ==
                     furnace.setField(2, Math.min(199, furnace.getField(2) + 5));
 
-                    BlockPos spot = IAuraChunk.getHighestSpot(this.world, this.pos, 15, this.pos);
+                    BlockPos spot = IAuraChunk.getHighestSpot(this.world, this.pos, 20, this.pos);
                     IAuraChunk chunk = IAuraChunk.getAuraChunk(this.world, spot);
                     chunk.drainAura(spot, MathHelper.ceil((200 - time) / 4F));
                     did = true;