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Heat Exchanger

Borderlands 3 Legendary Class Mod - Heat Exchanger
Borderlands 3 Legendary Class Mod - Heat Exchanger

About the Heat Exchanger:

The Heat Exchanger is a Legendary item in Borderlands 3. This legendary Gunner class mod increases your Minigun damage as your Minigun heats up.

Special Weapon Effect:

“I’m just getting warmed up.”

Iron Bear and Iron Cub gain up to +80% Minigun damage with increased Minigun Heat.

How to get the Heat Exchanger?:

The Heat Exchanger Class Mod is a Director’s Cut exclusive Legendary. You can farm one from The Seer in Scryer’s Crypt this is the final boss in Ava’s Murder Mystery Missions. Moze has a 40.8% chance of getting one, while other Vault Hunters only have a 6.1% chance to get this legendary class mod.

Skill Bonuses

Variants of the Heat Exchanger class mod grant the following bonuses:

SkillSkill Description
Really Big GunsIron Bear gains increased Damage
Feature CreepIncreases Iron Bear/Cub’s Damage and Damage Resistance.
Scorching RPM’sIncreases your Fire Rate, Critical Damage, and Skill Damage. Iron Bear/Cub receive double these bonuses.


  • Moze’s Heat Exchanger COM can spawn with a maximum of +4 on Really Big Guns, +4 on Scorching RPM’s, and up to +4 on Feature Creep (Which is a 1/1 skill).
    • To further add on that, it can also roll a “None” Part, making it possible to spawn with only 4 Skill Points.”
  • Best Roll: 1/1 “Feature Creep”, 4/5 “Scorching RPM’s”
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I'm a Content Creator by day and a BattleBread Baker at night. I'll provide you with your recommended slice of entertainment! I'm a Gearbox Community Badass and a proud member of the official Borderlands & Tiny Tina's Wonderlands Creator Team (2K Games / NextMakers).

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