Calamity Mod Wiki
EnvironmentAcid Rain
AI TypeSnail AI
Damage10 / 20 (Tier 1)
30 / 60 (Tier 2)
60 / 120 (Tier 3)
Max Life50 / 100 (Tier 1)
130 / 260 (Tier 2)
3,250 / 6,500 (Tier 3)
Defense5 (Tier 1)
10 (Tier 2)
20 (Tier 3)
KB Resist0% / 10%
Inflicts debuffIrradiatedIrradiated
100% chance
Debuff durationInfinite
Debuff tooltipYour skin is burning off
Inflicts debuffPoisonedPoisoned
100% chance
Debuff durationInfinite
Debuff tooltipSlowly losing life
Immune toConfusedKami FluIrradiatedSulphuric Poisoning
BannerRadiator BannerRadiator Banner

The Radiator is a Pre-Hardmode enemy that spawns during the Acid Rain event. It slowly crawls around the sides of tiles much like a Snail, and emits an aura around it that inflicts Irradiated and Poisoned onto the player. After defeating Polterghast, the aura will additionally inflict Sulphuric Poisoning and Venom.

There's a 5% chance for a Radiator to be spawned with brighter green glow compared to normal ones. These Radiators will drop a Radiating Crystal when hit with a Bug Net or Golden Bug Net.