Cooling

Relay Network

• Bays
  • Mint
  • Refinery
    • Transmutation
  • Cooling
  • Recovery
• Salvage
• Relay Heat
• Relay Research
• Bay Upgrades
• Network Store

The Cooling Bay is the Relay Network Bay that removes heat from your other Bays. It makes no BC or Salvage. Instead it burns Cryo Gel to produce cooling supply, which flows to your Mint, Refinery and Recovery Bays.

Takes in	Cryo Gel
Produces	Cooling supply for your other Bays
Cools	Mint, Refinery and Recovery, once a Bay passes 50% heat
Affected by	Relay Research (Thermal Routing), Bay Upgrades

How cooling is shared

• Cooling only reaches a Bay once that Bay's heat passes the halfway mark. Below that it relies on its own passive cooling.
• Supply is split evenly between the Bays that need it. The Thermal Routing Research node lets you weight it toward the Bay you care about most.
• More and higher-level Modules produce more supply. The Cooling Output Efficiency upgrade raises it further.
• A Cooling Bay only runs Off or Normal. It has no Underclocked or Overclocked mode, and makes no heat of its own.

Cryo Gel

Cryo Gel is the Cooling Bay's fuel. It is crafted from Frostsac (from Hunt) and Insulating Resin (from Explore).

The Cryo Gel tank holds a set number of hours of supply at your current burn rate, so levelling Modules does not make your stockpile run out sooner. If the tank runs dry, cooling drops to a tenth of normal until you refill it.

Cryo Gel is not the same as DX Coolant. Cryo Gel fuels the Cooling Bay over time; DX Coolant is a one-off item you apply to a single hot Bay.

Surge Capacitor

Cooling supply that no Bay needs is normally wasted. The Surge Capacitor upgrade banks part of it. The banked reserve is spent only on Bays cooling down after an Overclock burst, helping them recover faster.

Changelog

Release date	Update	Changes
August 13, 2026	v2026.08.13	Each overclockable bay now remembers its own coolant setting. Picking 3x coolant on the Mint bay no longer changes what the Refinery or Recovery bay will use. Your current coolant setting is carried over to every bay, so nothing changes until you start setting them apart.
August 12, 2026	v2026.08.12.2	You can now craft Cryo Gel straight from the Cooling Bay coolant popover using the new “Craft” link above Withdraw.
July 25, 2026	v2026.07.25	Cryo Gel / Salvage deposit popovers are simpler: fewer preset buttons, withdraw tucked behind a link, and the popover closes itself after a deposit.
June 18, 2026	v2026.06.18	Adjusting any bay configuration that impacts the maximum amounts of added items (Refinery basket, Cooling bay Cryo Gel storage) automatically adjusts the current maximum and refunds over-supply if necessary.
June 9, 2026	v2026.06.09.2	Overclock surge now acts as extra cooling on top of whatever cooling your setup is already providing, no longer deficit based. Surge stops exactly when the bay’s heat hits 50%. That means reserve energy is no longer silently wasted while the bay sits cold.
June 8, 2026	v2026.06.08.2	The Coolant popover now remembers your last-selected multiplier (1x–5x). The Mode popover has a new checkbox that will automatically apply that many coolant units immediately when you set a bay to Overclocked.
June 1, 2026	v2026.06.01	The Cooling Bay no longer wastes Cryo Gel when nothing actually needs cooling. If every Mint/Refinery is cool or idle, the bay will stop consuming coolant.
May 31, 2026	v2026.05.31	Once you own a Mint and a Refinery bay, you can build a Cooling Bay as your 3rd bay. Cooling Bays don’t produce BC or Salvage – their job is to provide cooling for your hot bays so they can hold full speed when covered. The network panel shows total cooling output and how much is in use; each hot bay shows what it needs vs what it’s getting and a throughput effectiveness %. Cooling is consumed from a per-bay coolant store. Use the Cooling Bay’s Coolant popover to Deposit Cryo Gel. If the store runs dry, cooling falls to a 10% cap and covered bays slowly heat up. New items: Frostsac (Hunt loot) and Cryo Gel (crafted from 50 Frostsac + 30 Insulating Resin). New research node Thermal Routing unlocks a per-bay cooling allocation control. When unlocked, the Cooling Bay card shows an Allocation split-bar popover so you can route more cooling to specific heat bays instead of splitting evenly. Thermal Master now requires Thermal Routing first (so you may need the new node before you can re-unlock the node/title). Cooling Output Efficiency upgrade: +3% cooling output per tier (up to +30%). You will see the real +X.XX% effect text in the upgrade rows and purchase views. Surge Capacitor upgrade: banks spare cooling into a reserve and spends it to cool bays faster right after an overclock burst. The reserve bar shows the live projected reserve and a subtitle with the net throughput rate. Coolant Buffer Expansion and Module Capacity Expansion now apply to Cooling Bays as well.

Guide: Relay heat and cooling

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