How to Unlock the Boiler Room in Blue Prince

The Boiler Room provides power to certain rooms around the estate in Blue Prince.

The Boiler Room will send steam power through the steam ducts on the ceiling to any connecting room, as long as they also have steam ducts. However, you’ll need to figure out how to activate the steam power first, which will require you to turn a lot of valves and pipes. Solving the puzzle can be very tedious, but once solved, you’ll unlock a lot of useful mechanics.

Here’s how to activate the Boiler Room in Blue Prince.

How to activate the Boiler Room in Blue Prince

Before activating the steam power in the Boiler Room, you should know what you’re working with:

How to activate each green tank

First things first, you’ll need to activate all three green tanks in the Boiler Room. Activate the first green tank at the bottom of the stairs by rotating its valve, which will release steam through its connecting pipe.

Next, rotate the red pipes so that the steam is directed towards the second tank on the lower floor. This will activate the vertical conveyor belt that was blocking the second tank’s valve, but, to turn the valve, you’ll need to stop the conveyor belt from moving at just the right time. We recommend turning the first green tank on and off until you can turn the second tank’s valve.

With the second tank activated, turn the blue hand lever, which can be found on its connecting pipe, to the right, and follow the pipe to the rotatable red pipe. Turn the red pipe so it’s pointed towards the elevator in the corner, activate its buttons. Get on the elevator and ride it to the top to find the next green tank.

Turn the valve on the green tank and redirect the small blue hand lever on its connecting pipe towards the left. At the end of the walkway, turn the lever to the left to lift and unlock the barred door. Next, ride the elevator back down to the lower floor to redirect steam to the control panel.

To redirect steam to the control panel, you’ll need to rotate the red pipes and small blue hand lever so that steam is directed from the tanks to the center of the room. Once the steam has been rerouted, walk up the stairs and along the pathways to the control panel.

Press the activate button to turn on the control panel and send steam power through its ducts. Below the control panel, you’ll find a slider that can be shifted to the left and right. This will shift the steam power to the left and right ducts respectively — meaning power will only be sent to rooms in said direction.

How to connect power from the Boiler Room in Blue Prince

To connect power from the Boiler Room to other rooms in Blue Prince, you’ll need to activate the control panel in the center of the upper floor, and shift the power towards one of the doorways. Then, you’ll need to draft a connecting room that has needs power:

However, as drafting is random, luck is not always in your favor. Instead, you might need to draft a room that has ducts:

Power will go through the ducts in these rooms — giving you another chance to draft one of the rooms that needs power. Once a powered-connection has been made, the ducts will glow blue.

For more Blue Prince guides, here’s how to use the Pump Room, how to use the Secret Garden Key, how to tell the date and time, and a list of all safe codes. Or see our full walkthrough on how to find Room 46.