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Offline Furnaces

Keep furnaces running even when you are not around.
by p0nx77
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70 downloads
0 likes
Updated Jun 30, 2026
0 hypes
Fixes Mechanics Miscellaneous

Fabric version here:

https://www.curseforge.com/minecraft/mc-mods/offline-furnaces-fabric

How it works:


In vanilla, when you left items processing in furnaces and the chunk gets unloaded, it stops, no ticks running on the furnace. So when you come back to the same chunk, it continues the process.

Everytime the plugin detects there is something burning on a furnace (it can be normal, blast, smelter) it will keep that chunk loaded until the last item is finished. To avoid performance issues this is done ONLY when processing items (actively burning). Fuel is not a trigger.


Features: 

  • Works with all types of vanilla furnaces. Including some custom ones, like BetterFurnace
  • Works with furnaces connected to hoppers.
  • Server-side only.
  • To keep a good performance, if there are more than 1 furnaces running on the same chunk, the plugin will keep active the entire chunk, and will wait for the last one to finish its items.
  • Added the command "/of debug" (only available to OPs) so you can check how many active chunks are loaded (by the plugin) and also how many furnaces within those chunks are running, with exact coordinates.

Installation: 


 

  • Drop the .jar file into your plugins folder.
  • Restart your server.

Be aware: 

  • This plugin WILL BECOME AN ISSUE if you are using crazy-giant furnace farms on your server. Since the main event here is keeping the chunk loaded, the more chunks you load, the less the performance.
  •  
  •  I won't be backporting this plugin to older versions. I tested it in all 1.21.x PaperMC/Spigot versions and it's properly working. However, you can try to use it in 1.20.x but do not expect to work on all previous versions.

Bye!

offline-furnace-1.0.jar
MC 1.21.2, 1.21, 1.21.3, 1.21.5, 1.21.8, 1.21.4, 1.21.7, 1.21.1, 1.21.6
Release 2025-08-24 Get

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