Head to the Janitor’s Office. (The closest fast travel location is the Ventilation Control Point.)
Go through the door on the left (near the dart board) so you can enter the tunnels. Keep going through the tunnels until you reach a doorway to your left that opens up to a Firebreak.
Jump out and levitate. Turn around to face the doorway you just jumped out of, and look to its left for another doorway. The picture above will show you the distance between the two entrances.
Bonus tip: Reenter the fire break and levitate down to the lowest platform. When the giant door opens and you walk through, you’ll find the NCS Coolant Pumps Upper Level Control Point, a collectible document, and a door to unlock that leads to the upper level of the NSC Coolant Pumps room.
Control is full of secrets, mysteries and awful Hiss monsters that show up while you’re trying to explore the farthest reaches of the Oldest House. Tucked away inside the shifting Brutalist architecture are several Hidden Locations.This list will show you how to find them.