As of Minecraft version 1.13 and beyond, player oxygen regenerates over time out of water as opposed to happening instantaneously.
This mod restores that pre-1.13 functionality with a gamerule 'toggleOldAirReplenish'. It's set to true by default, and you can use the following command as an op to change it:
/gamerule toggleOldAirReplenish true/false
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.20, 1.20.1, 1.20.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as instantairreplenish-1.0-1.20.3.jar — drop this file into the mods folder
- Download size: 13 KB
- Download link checked 30 Aug 2026 — working
These come from our own check of the pack file, not from the source page.