What is considered a good negative pressure reading?
That is probably the most frequently asked question and a question with many answers. CDC states that -.001″ is acceptable to qualify as negatively pressurized. The higher the pressure number the more exhaust pressure and the better the room will be functioning as an isolation room. The number you achieve however will be based upon many factors. Some of which would be the amount of supply to the room, the amount of exhaust, if the room is truly sealed, if there are any openings in the ceiling panels or walls where pipes, cables, wires, or hoses pass through? Usually no two rooms have the same reading based upon the conditions that govern them.
That is probably the most frequently asked question and a question with many answers. CDC states that -0.01″ WG is acceptable to qualify as negatively pressurized. The higher the pressure number the more exhaust pressure and the better the room will be functioning as an isolation room. The number you achieve however will be based upon many factors. Some of which would be the amount of supply to the room, the amount of exhaust, if the room is truly sealed, if there are any openings in the ceiling panels or walls where pipes, cables, wires pass through? Usually no two rooms have the same reading based upon the conditions that govern them.
