How You know you have negative or positive pressure. Tags: Fan Systems Last response: April 15, 2014 10:51 AM in Systems Share Sage Connel April 14, 2014 11:19:10 PM I can say I know I have negative pressure. I unplugged one fan while the rest were spinning, and it slowed down then reversed direction as the air came down through it and was being pulled out by the other fans. More about : negative positive pressure Reply to Sage Connel Gam3r01 April 14, 2014 11:25:13 PM Just for future advice, dont move/remove any connections while the power is on. As for the pressure the easiest way to know is just to count intake v exhaust. More intake, more positive and so on. Reply to Gam3r01 m 0 l i7Baby April 14, 2014 11:37:19 PM Or use a Static Pressure gauge Reply to i7Baby m 0 l Related resources How does heat affect pressure negative and positive - Forum How to know positive and negative in speaker wire - Forum Negative or Positive air pressure - Forum Negative vs Positive air pressure? - Forum Is positive or negative pressure better for a pc case? - Forum Can't find your answer ? Ask ! Get the answer thespaceduck April 15, 2014 12:03:06 AM If anyone in your proiximity smokes just ask them to blow a bit of smoke in the direction of the fans. Just make sure you dont get too much smoke in there Reply to thespaceduck m 0 l Sage Connel April 15, 2014 10:51:52 AM yeah I know it wasn't the smartest.....but I still thought it was cool xD Reply to Sage Connel m 0 l Ask the community Post an answer Related resources Negative or positive pressure ? Forum Negative or positive air pressure on CM 690 ii BaW? Forum Air Cooling: Using software profiles to switch between positive and negative pressure. Forum Case cooling: Positive, negative or equal airflow pressure? Forum Positive Pressure Cooling or Negative Pressure Cooling on a Corsair 350D Case? Forum Should I aim for Positive or Negative pressure? Forum What is positive and negative air pressure? Forum HAF 932, side fan or no, best airflow?, positive or negative pressure? Forum Positive or Negative Air Pressure? Forum Positive or Negative air pressure? Forum Case Airflow: Positive or Negative Pressure? Forum SolvedHow Do I Create a Negative Pressure Case Setup? Forum SolvedHow do I achieve positive air pressure in my HTPC setup? Forum How to figure out positive negative dc to dc converter Forum SolvedFractal R4 - Creating Positive Pressure Forum More resources Read discussions in other Systems categories Homebuilt New Build Prebuilt Cases Power Supplies RAM CyberPower !