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Boiler Room
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A utility room serving as a central hub for controlling the heating and steam power supplied to various rooms of the estate. Steam power is conveyed in the estate through steam ducts that run through select rooms. These floorplans must be drafted in an alignment that will facilitate the steam traveling through the house to reach its intended destination.
The Boiler Room is a room in Blue Prince. Listed as Room 032 in the Room Directory, the Boiler Room allows for the generation of steam power through the mansion. Once its mechanical components are correctly configured, it can send power through one of its three doors to an adjoining room.
For more information on how to activate the Boiler Room, see the main section below. For more information on using the Boiler Room after activating it, see steam power.
Entering the Boiler Room causes the first half of Stairways and Steam to start playing. Activating the Boiler Room causes the second half to start playing.
Drafting requirements
The Boiler Room has several drafting requirements. Some exist to prevent it from being drafted from its sealed door (as seen on the north of its default floorplan image) while some are seemingly arbitrary.
- The Boiler Room cannot be drafted on Rank 1 or Rank 9.
- The Boiler Room can only be drawn on the West Wing while drafting southwards.
- The Boiler Room can only be drawn on the East Wing while drafting northwards.
- While drafting in the center, the Boiler Room will never be drawn from its sealed door, meaning that it only has two orientations compared to the usual three for T-rooms. If it is rotated, it will cycle between these two orientations.
Beyond the Estate
This section contains datamined information about rarity. It may contain spoilers for various stages of the game.
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On Day 1, if Veteran Mode is enabled through doing fast early drafts, the Dynamic Rarity of Boiler Room is set to Standard for the day.
Once Day 17 or Room 46 has been reached, one of Boiler Room and Workshop have their Dynamic Rarity set to Standard at the start of the day. It's a 60% for Boiler Room, 40% for Workshop.
When a Gear Wrench is obtained by picking it up from the estate, the Boiler Room's Dynamic Rarity is always set to Standard.
Items
The Boiler Room does not usually contain items. However, with very high luck, it may contain one of the following items in one of the corners upstairs:
The Boiler Room may contain dig spots on the lower floor, with the number increasing up to four with sufficient luck.
The Boiler Room has a large number of interactable components that control the flow of steam throughout the room and bar access to certain parts of the room. Initially, one of the Boiler Room's doors is completely inaccessible, blocked by a retracted bridge, a closed gate, and mechanical shutter that seals the door.
The section below describes the various components of the Boiler Room and their layout in detail. Further information about the Boiler Room, including details of how it may be activated, are contained within.
Boiler Room components details and diagrams
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The Boiler Room contains three tanks, each of which must be turned on by interacting with a valve. The tanks send steam through pipes to various other components which have various effects. A number of switches and levers exist to control where each tank's steam flow is directed.
- Tanks
- Tank A, on the lower floor, can be activated freely and must cross through two switchers in order to have any effect.
- Tank B, also on the lower floor, is initially blocked by a strange plate on a vertical conveyer belt.
- Tank C, on the upper floor section, is on the other side of the gate and cannot be reached.
- Switchers and levers
- Switcher #1 initially leads from Tank B to the elevator. It may be toggled to instead lead from Tank A to Switcher #2.
- Switcher #2 has three ports in an uneven arrangement, and six different pipes it may connect to in a hexagonal layout. Initially, it connects to Tank B's conveyer belt, the bridge, and the condenser. However, since none of those pipes supply steam, it has no effect. It may be rotated clockwise into five other orientations, but only the orientations where it is receiving steam from Tank A matter:
- With one turn from its initial position, it connects Tank A to the condenser and the door seal.
- With two turns from its initial position, it connects Tank A to the main tank and the bridge.
- With four turns from its initial position, it connects Tank A to Tank B's conveyer belt and the door seal.
- Tank B has a lever which controls whether its steam is sent to the main tank or to switcher #1. It is initially directed towards the main tank.
- Tank C has a lever which controls whether its steam is sent to the main tank or the sealed door. It is initially directed towards the main tank.
- Receptors
- The conveyer belt moves while it is powered. This can unblock the valve on Tank B.
- The bridge is extended while it is receiving steam, connecting the two upper floor areas. However, it still cannot be crossed until the gate is lowered by a gate lever on the other side.
- The door seal opens when it receives steam from either Switcher #2 or Tank C.
- The elevator lowers while powered, and has buttons that can be used to move between floors without needing to cross the bridge and the gate. While unpowered, it is always on the upper floor.
- The main tank can be activated via an upper floor control panel only once it is receiving steam from all three of its sources.
- The condenser has no obvious effect.
The state of all tanks, switchers and levers is permanent and does not reset each day.
Components gallery
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The control panel.
The Steam Tank A.
The Steam Tank B.
The Steam Tank C and associated lever.
The first switcher.
The second switcher.
Lever for Tank B.
The High pressure condenser.
The bridge and gate.
The gate lever.
The elevator.
The sealed door.
Spoilers Within
This section contains spoilers for activating the Boiler Room.
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There are multiple ways to open up the Boiler Room and activate the turbine. The most straightforward method, from the room's initial state, is shown below.
- 1) Activating Tanks A and B
- Activate Tank A by interacting with the red gauge.
- Rotate Switcher #1 so that it connects Tank A and Switcher #2.
- Rotate Switcher #2 four times from its initial position so that it connects Switcher #1, the sealed door, and the Tank B conveyer belt. If done correctly, the vertical conveyor belt in front of tank B should be moving.
- Switcher #1 can now be flipped again to sever the connection and stop the conveyor belt, making the gauge for Tank B accessible. If is still obscured, rotate Switcher #2 twice to start and stop the conveyer until it is accessible.
- Activate Tank B by interacting with the gauge.
- 2) Opening the bridge gate
- Turn the lever for Tank B (LB) to point to the right.
- The elevator should now be powered and lowered. If it is not, rotate Switcher #1 so that the steam from Tank B reaches the elevator.
- Enter the elevator and interact with the up button to reach the upper floor. There, activate Tank C via the gauge.
- This will also open the sealed door. If this is all that is desired, e.g. for a Day 1 playthrough where no steam power is needed, the solution can be abandoned here.
- Interact with the gate lever. This will permanently open the gate, allowing access between the two upper sections as long as the bridge is extended. The gate lever can no longer be interacted with.
- 3) Activating the Boiler Room
- Turn the lever for the Trank C (LC) so it points to the left, towards the main tank.
- Return to the elevator and interact with the down button to return to the lower floor.
- Rotate Switcher #1 again so that it connects Tank A and Switcher #2.
- Rotate Switcher #2 four times so that it connects Tank A to the main tank and the bridge. If done correctly, the bridge should extend, allowing access to the entire room.
- Turn the lever for Tank B (LB) so that it points up, connecting Tank B to the main tank. All three tanks should now be sending steam to the main tank.
- Return to the upper floor via the stairs and approach the control panel. All three lights should be glowing, indicating that the three steam sources are configured correctly. The Boiler Room can now be activated by pressing the "ACTIVATE" button.
The activated Boiler Room sends steam power down one of its doors, initially the middle door. A switch under the control panel may be dragged to control which door is currently receiving and conveying steam power. Steam power may be sent through the right door even while it is sealed.
Once activated, the machine remains powered for the rest of the day even if the steam supply from any of the three tanks is cut off, meaning that the lever LC can be changed to the right to unseal the door.
While the Boiler Room does not activate permanently, the permanent nature of its components means that the Boiler Room can be easily activated again on subsequent days by merely pointing the lever LC to the left, activating the control panel, and then changing LC back to the right so that the door unseals.
Interactions
- Once activated, the Boiler Room has a large number of interactions with several other rooms. See Steam power#Powerable rooms for more information.
- The Boiler Room increases the steps gained from eating Country Stew Pie in the Dining Room by 10
.
Spoilers Within
This section contains spoilers for the condenser.
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The red box, the High Pressure Condenser, can send power outside of the house to certain remote power boxes. In order to do so, the box must be powered by Tank A with its two switchers in specific positions. This prevents the upper floor from being accessible, as both the bridge and the elevator are unpowered; however the setup leaves the sealed door powered, allowing the upper floor to be reached by drafting into it from the side. It also prevents Tank A from feeding into the turbine, though it can still be activated prior.
While the condenser is powered, certain remote power boxes on the state can be interacted with in order to permanently open certain doors.
Spoilers Within
This section contains spoilers for all remote power box locations.
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As a Mechanical Room
- Holding the Gear Wrench allows the rarity of the Boiler Room to be permanently adjusted when drafting it.
[Outer Room: Shrine] While the Blessing of the Tinkerer from the Shrine is active, drafting the Boiler Room will trigger the current experiment, if there is one.
[Contraption Spoiler: Powered Electromagnet] Having the Powered Electromagnet makes drawing the Boiler Room more likely.
[Found Floorplan: Mechanarium] Drafting the Boiler Room will cause an additional door to spawn in the Mechanarium when the latter is drafted.
Additional information
[Studio Addition: Dormitory] Drafting Strategy: Architectural Digest Vol. 2 has an entire page dedicated to the Boiler Room, steam power, and ducts within its section on Mechanical Rooms.
[Upgrade Spoiler: Aquarium] The Electric Eel Aquarium upgrade can provide steam power in a similar way to the Boiler Room, except that it powers all three of its doors simultaneously.- [Underground Spoiler: Sealed Entrance] The High Pressure Condenser is mentioned in a patent memo, found in the Sealed Entrance, which also hints towards its purpose.
Spoilers Within
This section contains spoilers for Mail Room experiments.
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The Boiler Room is mentioned in Randolph's third letter to the Mail Room, in which he states that the hydroelectric capabilities of its turbine have served as an emergency power source for the local community in the past. It also reveals that power from the Boiler Room is required to power the machine in the Laboratory.
- [Later letter] Randolph's fourth letter elaborates further on the Boiler Room and explains the duct system. A simple diagram suggests uses for steam power in the Garage, Pump Room and Laundry Room in addition to the Laboratory.